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Finding the Fourth Proportional to 289,966.91, 400,127.45 and 162,617.90

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Solution

The fourth proportional to 289,966.91, 400,127.45 and 162,617.90 is: 224,397.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,966.91 : 400,127.45 = 162,617.90 : x
  2. Step 2: Convert to fraction form
    289,966.91/400,127.45 = 162,617.90/x
  3. Step 3: Cross multiply
    289,966.91x = 400,127.45 × 162,617.90
  4. Step 4: Simplify right side
    289,966.91x = 65,067,882,837.63
  5. Step 5: Solve for x
    x = 65,067,882,837.63/289,966.91
  6. Step 6: Final answer
    x = 224,397.62

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1.5x scale

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.