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Finding the Fourth Proportional to 334,737.28, 502,105.60 and 85,419.28

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Solution

The fourth proportional to 334,737.28, 502,105.60 and 85,419.28 is: 128,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,737.28 : 502,105.60 = 85,419.28 : x
  2. Step 2: Convert to fraction form
    334,737.28/502,105.60 = 85,419.28/x
  3. Step 3: Cross multiply
    334,737.28x = 502,105.60 × 85,419.28
  4. Step 4: Simplify right side
    334,737.28x = 42,889,498,835.97
  5. Step 5: Solve for x
    x = 42,889,498,835.97/334,737.28
  6. Step 6: Final answer
    x = 128,128.84

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1.5x scale

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.