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Finding the Fourth Proportional to 407,249.40, 610,931.70 and 126,737.40

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Solution

The fourth proportional to 407,249.40, 610,931.70 and 126,737.40 is: 190,124.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,249.40 : 610,931.70 = 126,737.40 : x
  2. Step 2: Convert to fraction form
    407,249.40/610,931.70 = 126,737.40/x
  3. Step 3: Cross multiply
    407,249.40x = 610,931.70 × 126,737.40
  4. Step 4: Simplify right side
    407,249.40x = 77,427,895,235.58
  5. Step 5: Solve for x
    x = 77,427,895,235.58/407,249.40
  6. Step 6: Final answer
    x = 190,124.03

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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.