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Finding the Fourth Proportional to 527,662.72, 791,482.98 and 128,305.54

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Solution

The fourth proportional to 527,662.72, 791,482.98 and 128,305.54 is: 192,455.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,662.72 : 791,482.98 = 128,305.54 : x
  2. Step 2: Convert to fraction form
    527,662.72/791,482.98 = 128,305.54/x
  3. Step 3: Cross multiply
    527,662.72x = 791,482.98 × 128,305.54
  4. Step 4: Simplify right side
    527,662.72x = 101,551,651,149.71
  5. Step 5: Solve for x
    x = 101,551,651,149.71/527,662.72
  6. Step 6: Final answer
    x = 192,455.61

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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.