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Finding the Fourth Proportional to 428,898.96, 591,869.13 and 247,604.76

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Solution

The fourth proportional to 428,898.96, 591,869.13 and 247,604.76 is: 341,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,898.96 : 591,869.13 = 247,604.76 : x
  2. Step 2: Convert to fraction form
    428,898.96/591,869.13 = 247,604.76/x
  3. Step 3: Cross multiply
    428,898.96x = 591,869.13 × 247,604.76
  4. Step 4: Simplify right side
    428,898.96x = 146,549,613,885.06
  5. Step 5: Solve for x
    x = 146,549,613,885.06/428,898.96
  6. Step 6: Final answer
    x = 341,687.97

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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.