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Finding the Fourth Proportional to 435,138.68, 652,713.78 and 168,914.36

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Solution

The fourth proportional to 435,138.68, 652,713.78 and 168,914.36 is: 253,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,138.68 : 652,713.78 = 168,914.36 : x
  2. Step 2: Convert to fraction form
    435,138.68/652,713.78 = 168,914.36/x
  3. Step 3: Cross multiply
    435,138.68x = 652,713.78 × 168,914.36
  4. Step 4: Simplify right side
    435,138.68x = 110,252,730,411.88
  5. Step 5: Solve for x
    x = 110,252,730,411.88/435,138.68
  6. Step 6: Final answer
    x = 253,373.78

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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.