Home / 287,425,340.10-431,138,010.15-82,960,085.70

Finding the Fourth Proportional to 287,425,340.10, 431,138,010.15 and 82,960,085.70

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Solution

The fourth proportional to 287,425,340.10, 431,138,010.15 and 82,960,085.70 is: 124,440,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,425,340.10 : 431,138,010.15 = 82,960,085.70 : x
  2. Step 2: Convert to fraction form
    287,425,340.10/431,138,010.15 = 82,960,085.70/x
  3. Step 3: Cross multiply
    287,425,340.10x = 431,138,010.15 × 82,960,085.70
  4. Step 4: Simplify right side
    287,425,340.10x = 35,767,246,270,571,468
  5. Step 5: Solve for x
    x = 35,767,246,270,571,468/287,425,340.10
  6. Step 6: Final answer
    x = 124,440,128.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.