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Finding the Fourth Proportional to 438,068.80, 657,103.20 and 228,116.80

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Solution

The fourth proportional to 438,068.80, 657,103.20 and 228,116.80 is: 342,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,068.80 : 657,103.20 = 228,116.80 : x
  2. Step 2: Convert to fraction form
    438,068.80/657,103.20 = 228,116.80/x
  3. Step 3: Cross multiply
    438,068.80x = 657,103.20 × 228,116.80
  4. Step 4: Simplify right side
    438,068.80x = 149,896,279,253.76
  5. Step 5: Solve for x
    x = 149,896,279,253.76/438,068.80
  6. Step 6: Final answer
    x = 342,175.20

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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.