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Finding the Fourth Proportional to 438,110.70, 657,166.05 and 171,879.90

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Solution

The fourth proportional to 438,110.70, 657,166.05 and 171,879.90 is: 257,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,110.70 : 657,166.05 = 171,879.90 : x
  2. Step 2: Convert to fraction form
    438,110.70/657,166.05 = 171,879.90/x
  3. Step 3: Cross multiply
    438,110.70x = 657,166.05 × 171,879.90
  4. Step 4: Simplify right side
    438,110.70x = 112,953,634,957.40
  5. Step 5: Solve for x
    x = 112,953,634,957.40/438,110.70
  6. Step 6: Final answer
    x = 257,819.85

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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.