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Finding the Fourth Proportional to 428,345.59, 591,115.69 and 237,358.98

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Solution

The fourth proportional to 428,345.59, 591,115.69 and 237,358.98 is: 327,554.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,345.59 : 591,115.69 = 237,358.98 : x
  2. Step 2: Convert to fraction form
    428,345.59/591,115.69 = 237,358.98/x
  3. Step 3: Cross multiply
    428,345.59x = 591,115.69 × 237,358.98
  4. Step 4: Simplify right side
    428,345.59x = 140,306,618,198.25
  5. Step 5: Solve for x
    x = 140,306,618,198.25/428,345.59
  6. Step 6: Final answer
    x = 327,554.71

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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.