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Finding the Fourth Proportional to 291,499.40, 402,282.78 and 176,781.80

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Solution

The fourth proportional to 291,499.40, 402,282.78 and 176,781.80 is: 243,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,499.40 : 402,282.78 = 176,781.80 : x
  2. Step 2: Convert to fraction form
    291,499.40/402,282.78 = 176,781.80/x
  3. Step 3: Cross multiply
    291,499.40x = 402,282.78 × 176,781.80
  4. Step 4: Simplify right side
    291,499.40x = 71,116,273,957.40
  5. Step 5: Solve for x
    x = 71,116,273,957.40/291,499.40
  6. Step 6: Final answer
    x = 243,967.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.