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Finding the Fourth Proportional to 428,363.16, 591,144.66 and 237,379.74

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Solution

The fourth proportional to 428,363.16, 591,144.66 and 237,379.74 is: 327,585.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,363.16 : 591,144.66 = 237,379.74 : x
  2. Step 2: Convert to fraction form
    428,363.16/591,144.66 = 237,379.74/x
  3. Step 3: Cross multiply
    428,363.16x = 591,144.66 × 237,379.74
  4. Step 4: Simplify right side
    428,363.16x = 140,325,765,693.19
  5. Step 5: Solve for x
    x = 140,325,765,693.19/428,363.16
  6. Step 6: Final answer
    x = 327,585.98

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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.