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Finding the Fourth Proportional to 438,043.60, 657,016.80 and 122,532.40

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Solution

The fourth proportional to 438,043.60, 657,016.80 and 122,532.40 is: 183,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,043.60 : 657,016.80 = 122,532.40 : x
  2. Step 2: Convert to fraction form
    438,043.60/657,016.80 = 122,532.40/x
  3. Step 3: Cross multiply
    438,043.60x = 657,016.80 × 122,532.40
  4. Step 4: Simplify right side
    438,043.60x = 80,505,845,344.32
  5. Step 5: Solve for x
    x = 80,505,845,344.32/438,043.60
  6. Step 6: Final answer
    x = 183,785.01

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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.