Home / 389,182,431.88-537,071,702.14-212,970,380.53

Finding the Fourth Proportional to 389,182,431.88, 537,071,702.14 and 212,970,380.53

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Solution

The fourth proportional to 389,182,431.88, 537,071,702.14 and 212,970,380.53 is: 293,899,095.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,182,431.88 : 537,071,702.14 = 212,970,380.53 : x
  2. Step 2: Convert to fraction form
    389,182,431.88/537,071,702.14 = 212,970,380.53/x
  3. Step 3: Cross multiply
    389,182,431.88x = 537,071,702.14 × 212,970,380.53
  4. Step 4: Simplify right side
    389,182,431.88x = 114,380,364,778,087,648
  5. Step 5: Solve for x
    x = 114,380,364,778,087,648/389,182,431.88
  6. Step 6: Final answer
    x = 293,899,095.66

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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.