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Finding the Fourth Proportional to 438,071.92, 657,108.52 and 105,647.92

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Solution

The fourth proportional to 438,071.92, 657,108.52 and 105,647.92 is: 158,472.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,071.92 : 657,108.52 = 105,647.92 : x
  2. Step 2: Convert to fraction form
    438,071.92/657,108.52 = 105,647.92/x
  3. Step 3: Cross multiply
    438,071.92x = 657,108.52 × 105,647.92
  4. Step 4: Simplify right side
    438,071.92x = 69,422,148,352.28
  5. Step 5: Solve for x
    x = 69,422,148,352.28/438,071.92
  6. Step 6: Final answer
    x = 158,472.03

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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.