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Finding the Fourth Proportional to 318,374.27, 439,357.53 and 175,145.21

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Solution

The fourth proportional to 318,374.27, 439,357.53 and 175,145.21 is: 241,700.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,374.27 : 439,357.53 = 175,145.21 : x
  2. Step 2: Convert to fraction form
    318,374.27/439,357.53 = 175,145.21/x
  3. Step 3: Cross multiply
    318,374.27x = 439,357.53 × 175,145.21
  4. Step 4: Simplify right side
    318,374.27x = 76,951,366,856.93
  5. Step 5: Solve for x
    x = 76,951,366,856.93/318,374.27
  6. Step 6: Final answer
    x = 241,700.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.