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Finding the Fourth Proportional to 438,316.56, 657,540.56 and 153,956.97

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Solution

The fourth proportional to 438,316.56, 657,540.56 and 153,956.97 is: 230,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,316.56 : 657,540.56 = 153,956.97 : x
  2. Step 2: Convert to fraction form
    438,316.56/657,540.56 = 153,956.97/x
  3. Step 3: Cross multiply
    438,316.56x = 657,540.56 × 153,956.97
  4. Step 4: Simplify right side
    438,316.56x = 101,232,952,269.70
  5. Step 5: Solve for x
    x = 101,232,952,269.70/438,316.56
  6. Step 6: Final answer
    x = 230,958.54

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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.