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Finding the Fourth Proportional to 268,931.60, 403,397.40 and 239,901.20

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Solution

The fourth proportional to 268,931.60, 403,397.40 and 239,901.20 is: 359,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,931.60 : 403,397.40 = 239,901.20 : x
  2. Step 2: Convert to fraction form
    268,931.60/403,397.40 = 239,901.20/x
  3. Step 3: Cross multiply
    268,931.60x = 403,397.40 × 239,901.20
  4. Step 4: Simplify right side
    268,931.60x = 96,775,520,336.88
  5. Step 5: Solve for x
    x = 96,775,520,336.88/268,931.60
  6. Step 6: Final answer
    x = 359,851.80

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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.