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Finding the Fourth Proportional to 207,080.52, 285,065.91 and 153,264.12

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Solution

The fourth proportional to 207,080.52, 285,065.91 and 153,264.12 is: 210,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,080.52 : 285,065.91 = 153,264.12 : x
  2. Step 2: Convert to fraction form
    207,080.52/285,065.91 = 153,264.12/x
  3. Step 3: Cross multiply
    207,080.52x = 285,065.91 × 153,264.12
  4. Step 4: Simplify right side
    207,080.52x = 43,690,375,838.15
  5. Step 5: Solve for x
    x = 43,690,375,838.15/207,080.52
  6. Step 6: Final answer
    x = 210,982.55

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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.