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Finding the Fourth Proportional to 498,658.65, 747,987.90 and 124,681.65

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Solution

The fourth proportional to 498,658.65, 747,987.90 and 124,681.65 is: 187,022.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,658.65 : 747,987.90 = 124,681.65 : x
  2. Step 2: Convert to fraction form
    498,658.65/747,987.90 = 124,681.65/x
  3. Step 3: Cross multiply
    498,658.65x = 747,987.90 × 124,681.65
  4. Step 4: Simplify right side
    498,658.65x = 93,260,365,552.04
  5. Step 5: Solve for x
    x = 93,260,365,552.04/498,658.65
  6. Step 6: Final answer
    x = 187,022.46

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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.