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Finding the Fourth Proportional to 438,540.40, 657,810.60 and 106,116.40

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Solution

The fourth proportional to 438,540.40, 657,810.60 and 106,116.40 is: 159,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,540.40 : 657,810.60 = 106,116.40 : x
  2. Step 2: Convert to fraction form
    438,540.40/657,810.60 = 106,116.40/x
  3. Step 3: Cross multiply
    438,540.40x = 657,810.60 × 106,116.40
  4. Step 4: Simplify right side
    438,540.40x = 69,804,492,753.84
  5. Step 5: Solve for x
    x = 69,804,492,753.84/438,540.40
  6. Step 6: Final answer
    x = 159,174.60

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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.