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Finding the Fourth Proportional to 438,115.60, 657,124.80 and 122,604.40

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Solution

The fourth proportional to 438,115.60, 657,124.80 and 122,604.40 is: 183,893.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,115.60 : 657,124.80 = 122,604.40 : x
  2. Step 2: Convert to fraction form
    438,115.60/657,124.80 = 122,604.40/x
  3. Step 3: Cross multiply
    438,115.60x = 657,124.80 × 122,604.40
  4. Step 4: Simplify right side
    438,115.60x = 80,566,391,829.12
  5. Step 5: Solve for x
    x = 80,566,391,829.12/438,115.60
  6. Step 6: Final answer
    x = 183,893.00

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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.