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Finding the Fourth Proportional to 639,230.88, 959,274.36 and 265,254.24

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Solution

The fourth proportional to 639,230.88, 959,274.36 and 265,254.24 is: 398,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,230.88 : 959,274.36 = 265,254.24 : x
  2. Step 2: Convert to fraction form
    639,230.88/959,274.36 = 265,254.24/x
  3. Step 3: Cross multiply
    639,230.88x = 959,274.36 × 265,254.24
  4. Step 4: Simplify right side
    639,230.88x = 254,451,591,313.29
  5. Step 5: Solve for x
    x = 254,451,591,313.29/639,230.88
  6. Step 6: Final answer
    x = 398,058.98

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Double scale
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Similar ratio
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1.5x scale

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.