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Finding the Fourth Proportional to 661,893.12, 993,254.40 and 267,909.12

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Solution

The fourth proportional to 661,893.12, 993,254.40 and 267,909.12 is: 402,031.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,893.12 : 993,254.40 = 267,909.12 : x
  2. Step 2: Convert to fraction form
    661,893.12/993,254.40 = 267,909.12/x
  3. Step 3: Cross multiply
    661,893.12x = 993,254.40 × 267,909.12
  4. Step 4: Simplify right side
    661,893.12x = 266,101,912,240.13
  5. Step 5: Solve for x
    x = 266,101,912,240.13/661,893.12
  6. Step 6: Final answer
    x = 402,031.54

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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.