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Finding the Fourth Proportional to 478,424.55, 717,387.65 and 225,637.16

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Solution

The fourth proportional to 478,424.55, 717,387.65 and 225,637.16 is: 338,338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,424.55 : 717,387.65 = 225,637.16 : x
  2. Step 2: Convert to fraction form
    478,424.55/717,387.65 = 225,637.16/x
  3. Step 3: Cross multiply
    478,424.55x = 717,387.65 × 225,637.16
  4. Step 4: Simplify right side
    478,424.55x = 161,869,307,249.95
  5. Step 5: Solve for x
    x = 161,869,307,249.95/478,424.55
  6. Step 6: Final answer
    x = 338,338.21

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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.