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Finding the Fourth Proportional to 449,071.08, 619,702.60 and 267,689.48

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Solution

The fourth proportional to 449,071.08, 619,702.60 and 267,689.48 is: 369,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,071.08 : 619,702.60 = 267,689.48 : x
  2. Step 2: Convert to fraction form
    449,071.08/619,702.60 = 267,689.48/x
  3. Step 3: Cross multiply
    449,071.08x = 619,702.60 × 267,689.48
  4. Step 4: Simplify right side
    449,071.08x = 165,887,866,748.65
  5. Step 5: Solve for x
    x = 165,887,866,748.65/449,071.08
  6. Step 6: Final answer
    x = 369,402.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.