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Finding the Fourth Proportional to 334,737.76, 502,106.37 and 85,419.76

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Solution

The fourth proportional to 334,737.76, 502,106.37 and 85,419.76 is: 128,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,737.76 : 502,106.37 = 85,419.76 : x
  2. Step 2: Convert to fraction form
    334,737.76/502,106.37 = 85,419.76/x
  3. Step 3: Cross multiply
    334,737.76x = 502,106.37 × 85,419.76
  4. Step 4: Simplify right side
    334,737.76x = 42,889,805,619.87
  5. Step 5: Solve for x
    x = 42,889,805,619.87/334,737.76
  6. Step 6: Final answer
    x = 128,129.57

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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.