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Finding the Fourth Proportional to 438,077.70, 657,116.55 and 279,836.10

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Solution

The fourth proportional to 438,077.70, 657,116.55 and 279,836.10 is: 419,754.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,077.70 : 657,116.55 = 279,836.10 : x
  2. Step 2: Convert to fraction form
    438,077.70/657,116.55 = 279,836.10/x
  3. Step 3: Cross multiply
    438,077.70x = 657,116.55 × 279,836.10
  4. Step 4: Simplify right side
    438,077.70x = 183,884,932,597.46
  5. Step 5: Solve for x
    x = 183,884,932,597.46/438,077.70
  6. Step 6: Final answer
    x = 419,754.15

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Similar ratio
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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.