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Finding the Fourth Proportional to 478,504.64, 717,859.02 and 238,747.48

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Solution

The fourth proportional to 478,504.64, 717,859.02 and 238,747.48 is: 358,172.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,504.64 : 717,859.02 = 238,747.48 : x
  2. Step 2: Convert to fraction form
    478,504.64/717,859.02 = 238,747.48/x
  3. Step 3: Cross multiply
    478,504.64x = 717,859.02 × 238,747.48
  4. Step 4: Simplify right side
    478,504.64x = 171,387,032,020.27
  5. Step 5: Solve for x
    x = 171,387,032,020.27/478,504.64
  6. Step 6: Final answer
    x = 358,172.14

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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.