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Finding the Fourth Proportional to 292,319.72, 438,614.90 and 159,041.20

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Solution

The fourth proportional to 292,319.72, 438,614.90 and 159,041.20 is: 238,635.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,319.72 : 438,614.90 = 159,041.20 : x
  2. Step 2: Convert to fraction form
    292,319.72/438,614.90 = 159,041.20/x
  3. Step 3: Cross multiply
    292,319.72x = 438,614.90 × 159,041.20
  4. Step 4: Simplify right side
    292,319.72x = 69,757,840,033.88
  5. Step 5: Solve for x
    x = 69,757,840,033.88/292,319.72
  6. Step 6: Final answer
    x = 238,635.42

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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.