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Finding the Fourth Proportional to 517,129.40, 775,694.10 and 162,172.04

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Solution

The fourth proportional to 517,129.40, 775,694.10 and 162,172.04 is: 243,258.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,129.40 : 775,694.10 = 162,172.04 : x
  2. Step 2: Convert to fraction form
    517,129.40/775,694.10 = 162,172.04/x
  3. Step 3: Cross multiply
    517,129.40x = 775,694.10 × 162,172.04
  4. Step 4: Simplify right side
    517,129.40x = 125,795,894,612.96
  5. Step 5: Solve for x
    x = 125,795,894,612.96/517,129.40
  6. Step 6: Final answer
    x = 243,258.06

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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.