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Finding the Fourth Proportional to 291,374.15, 437,123.76 and 165,074.90

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Solution

The fourth proportional to 291,374.15, 437,123.76 and 165,074.90 is: 247,647.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,374.15 : 437,123.76 = 165,074.90 : x
  2. Step 2: Convert to fraction form
    291,374.15/437,123.76 = 165,074.90/x
  3. Step 3: Cross multiply
    291,374.15x = 437,123.76 × 165,074.90
  4. Step 4: Simplify right side
    291,374.15x = 72,158,160,623.80
  5. Step 5: Solve for x
    x = 72,158,160,623.80/291,374.15
  6. Step 6: Final answer
    x = 247,647.78

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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.