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Finding the Fourth Proportional to 345,287.64, 517,930.29 and 155,525.88

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Solution

The fourth proportional to 345,287.64, 517,930.29 and 155,525.88 is: 233,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,287.64 : 517,930.29 = 155,525.88 : x
  2. Step 2: Convert to fraction form
    345,287.64/517,930.29 = 155,525.88/x
  3. Step 3: Cross multiply
    345,287.64x = 517,930.29 × 155,525.88
  4. Step 4: Simplify right side
    345,287.64x = 80,551,564,130.91
  5. Step 5: Solve for x
    x = 80,551,564,130.91/345,287.64
  6. Step 6: Final answer
    x = 233,288.29

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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.