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Finding the Fourth Proportional to 487,667.12, 731,562.96 and 188,233.34

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Solution

The fourth proportional to 487,667.12, 731,562.96 and 188,233.34 is: 282,374.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,667.12 : 731,562.96 = 188,233.34 : x
  2. Step 2: Convert to fraction form
    487,667.12/731,562.96 = 188,233.34/x
  3. Step 3: Cross multiply
    487,667.12x = 731,562.96 × 188,233.34
  4. Step 4: Simplify right side
    487,667.12x = 137,704,539,381.09
  5. Step 5: Solve for x
    x = 137,704,539,381.09/487,667.12
  6. Step 6: Final answer
    x = 282,374.05

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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.