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Finding the Fourth Proportional to 438,079.92, 657,120.52 and 105,655.92

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Solution

The fourth proportional to 438,079.92, 657,120.52 and 105,655.92 is: 158,484.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,079.92 : 657,120.52 = 105,655.92 : x
  2. Step 2: Convert to fraction form
    438,079.92/657,120.52 = 105,655.92/x
  3. Step 3: Cross multiply
    438,079.92x = 657,120.52 × 105,655.92
  4. Step 4: Simplify right side
    438,079.92x = 69,428,673,091.48
  5. Step 5: Solve for x
    x = 69,428,673,091.48/438,079.92
  6. Step 6: Final answer
    x = 158,484.03

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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.