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Finding the Fourth Proportional to 385,158.28, 577,620.78 and 104,639.08

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Solution

The fourth proportional to 385,158.28, 577,620.78 and 104,639.08 is: 156,926.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,158.28 : 577,620.78 = 104,639.08 : x
  2. Step 2: Convert to fraction form
    385,158.28/577,620.78 = 104,639.08/x
  3. Step 3: Cross multiply
    385,158.28x = 577,620.78 × 104,639.08
  4. Step 4: Simplify right side
    385,158.28x = 60,441,707,008.08
  5. Step 5: Solve for x
    x = 60,441,707,008.08/385,158.28
  6. Step 6: Final answer
    x = 156,926.93

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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.