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Finding the Fourth Proportional to 425,091.65, 637,721.55 and 121,488.53

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Solution

The fourth proportional to 425,091.65, 637,721.55 and 121,488.53 is: 182,256.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,091.65 : 637,721.55 = 121,488.53 : x
  2. Step 2: Convert to fraction form
    425,091.65/637,721.55 = 121,488.53/x
  3. Step 3: Cross multiply
    425,091.65x = 637,721.55 × 121,488.53
  4. Step 4: Simplify right side
    425,091.65x = 77,475,855,253.13
  5. Step 5: Solve for x
    x = 77,475,855,253.13/425,091.65
  6. Step 6: Final answer
    x = 182,256.83

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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.