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Finding the Fourth Proportional to 478,287.60, 717,172.20 and 197,487.60

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Solution

The fourth proportional to 478,287.60, 717,172.20 and 197,487.60 is: 296,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,287.60 : 717,172.20 = 197,487.60 : x
  2. Step 2: Convert to fraction form
    478,287.60/717,172.20 = 197,487.60/x
  3. Step 3: Cross multiply
    478,287.60x = 717,172.20 × 197,487.60
  4. Step 4: Simplify right side
    478,287.60x = 141,632,616,564.72
  5. Step 5: Solve for x
    x = 141,632,616,564.72/478,287.60
  6. Step 6: Final answer
    x = 296,124.37

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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.