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Finding the Fourth Proportional to 275,549.66, 413,339.88 and 86,036.20

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Solution

The fourth proportional to 275,549.66, 413,339.88 and 86,036.20 is: 129,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,549.66 : 413,339.88 = 86,036.20 : x
  2. Step 2: Convert to fraction form
    275,549.66/413,339.88 = 86,036.20/x
  3. Step 3: Cross multiply
    275,549.66x = 413,339.88 × 86,036.20
  4. Step 4: Simplify right side
    275,549.66x = 35,562,190,516.96
  5. Step 5: Solve for x
    x = 35,562,190,516.96/275,549.66
  6. Step 6: Final answer
    x = 129,059.10

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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.