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Finding the Fourth Proportional to 403,639.16, 605,248.52 and 150,711.64

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Solution

The fourth proportional to 403,639.16, 605,248.52 and 150,711.64 is: 225,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,639.16 : 605,248.52 = 150,711.64 : x
  2. Step 2: Convert to fraction form
    403,639.16/605,248.52 = 150,711.64/x
  3. Step 3: Cross multiply
    403,639.16x = 605,248.52 × 150,711.64
  4. Step 4: Simplify right side
    403,639.16x = 91,217,997,056.77
  5. Step 5: Solve for x
    x = 91,217,997,056.77/403,639.16
  6. Step 6: Final answer
    x = 225,988.97

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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.