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Finding the Fourth Proportional to 635,520, 953,411.28 and 186,255.60

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Solution

The fourth proportional to 635,520, 953,411.28 and 186,255.60 is: 279,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,520 : 953,411.28 = 186,255.60 : x
  2. Step 2: Convert to fraction form
    635,520/953,411.28 = 186,255.60/x
  3. Step 3: Cross multiply
    635,520x = 953,411.28 × 186,255.60
  4. Step 4: Simplify right side
    635,520x = 177,578,190,003.17
  5. Step 5: Solve for x
    x = 177,578,190,003.17/635,520
  6. Step 6: Final answer
    x = 279,421.88

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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.