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Finding the Fourth Proportional to 292,147.60, 438,091.80 and 134,424.40

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Solution

The fourth proportional to 292,147.60, 438,091.80 and 134,424.40 is: 201,576.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,147.60 : 438,091.80 = 134,424.40 : x
  2. Step 2: Convert to fraction form
    292,147.60/438,091.80 = 134,424.40/x
  3. Step 3: Cross multiply
    292,147.60x = 438,091.80 × 134,424.40
  4. Step 4: Simplify right side
    292,147.60x = 58,890,227,359.92
  5. Step 5: Solve for x
    x = 58,890,227,359.92/292,147.60
  6. Step 6: Final answer
    x = 201,576.97

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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.