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Finding the Fourth Proportional to 290,159.28, 400,422.15 and 162,864.90

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Solution

The fourth proportional to 290,159.28, 400,422.15 and 162,864.90 is: 224,754.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,159.28 : 400,422.15 = 162,864.90 : x
  2. Step 2: Convert to fraction form
    290,159.28/400,422.15 = 162,864.90/x
  3. Step 3: Cross multiply
    290,159.28x = 400,422.15 × 162,864.90
  4. Step 4: Simplify right side
    290,159.28x = 65,214,713,417.54
  5. Step 5: Solve for x
    x = 65,214,713,417.54/290,159.28
  6. Step 6: Final answer
    x = 224,754.88

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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.