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Finding the Fourth Proportional to 539,438.64, 809,197.72 and 155,171.94

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Solution

The fourth proportional to 539,438.64, 809,197.72 and 155,171.94 is: 232,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,438.64 : 809,197.72 = 155,171.94 : x
  2. Step 2: Convert to fraction form
    539,438.64/809,197.72 = 155,171.94/x
  3. Step 3: Cross multiply
    539,438.64x = 809,197.72 × 155,171.94
  4. Step 4: Simplify right side
    539,438.64x = 125,564,780,055.98
  5. Step 5: Solve for x
    x = 125,564,780,055.98/539,438.64
  6. Step 6: Final answer
    x = 232,769.35

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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.