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Finding the Fourth Proportional to 438,053.20, 656,820.60 and 228,101.20

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Solution

The fourth proportional to 438,053.20, 656,820.60 and 228,101.20 is: 342,016.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,053.20 : 656,820.60 = 228,101.20 : x
  2. Step 2: Convert to fraction form
    438,053.20/656,820.60 = 228,101.20/x
  3. Step 3: Cross multiply
    438,053.20x = 656,820.60 × 228,101.20
  4. Step 4: Simplify right side
    438,053.20x = 149,821,567,044.72
  5. Step 5: Solve for x
    x = 149,821,567,044.72/438,053.20
  6. Step 6: Final answer
    x = 342,016.83

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1.5x scale

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.