Home / 387,306,398.86-534,494,032.12-211,105,806.74

Finding the Fourth Proportional to 387,306,398.86, 534,494,032.12 and 211,105,806.74

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Solution

The fourth proportional to 387,306,398.86, 534,494,032.12 and 211,105,806.74 is: 291,332,118.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,306,398.86 : 534,494,032.12 = 211,105,806.74 : x
  2. Step 2: Convert to fraction form
    387,306,398.86/534,494,032.12 = 211,105,806.74/x
  3. Step 3: Cross multiply
    387,306,398.86x = 534,494,032.12 × 211,105,806.74
  4. Step 4: Simplify right side
    387,306,398.86x = 112,834,793,848,408,080
  5. Step 5: Solve for x
    x = 112,834,793,848,408,080/387,306,398.86
  6. Step 6: Final answer
    x = 291,332,118.91

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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.