Home / 386,086,684,881.21-532,799,712,103.92-212,471,824,332.73

Finding the Fourth Proportional to 386,086,684,881.21, 532,799,712,103.92 and 212,471,824,332.73

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Solution

The fourth proportional to 386,086,684,881.21, 532,799,712,103.92 and 212,471,824,332.73 is: 293,211,165,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,086,684,881.21 : 532,799,712,103.92 = 212,471,824,332.73 : x
  2. Step 2: Convert to fraction form
    386,086,684,881.21/532,799,712,103.92 = 212,471,824,332.73/x
  3. Step 3: Cross multiply
    386,086,684,881.21x = 532,799,712,103.92 × 212,471,824,332.73
  4. Step 4: Simplify right side
    386,086,684,881.21x = 113,204,926,834,673,218,224,128
  5. Step 5: Solve for x
    x = 113,204,926,834,673,218,224,128/386,086,684,881.21
  6. Step 6: Final answer
    x = 293,211,165,439.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.