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Finding the Fourth Proportional to 268,145.43, 402,215.93 and 108,218.91

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Solution

The fourth proportional to 268,145.43, 402,215.93 and 108,218.91 is: 162,327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,145.43 : 402,215.93 = 108,218.91 : x
  2. Step 2: Convert to fraction form
    268,145.43/402,215.93 = 108,218.91/x
  3. Step 3: Cross multiply
    268,145.43x = 402,215.93 × 108,218.91
  4. Step 4: Simplify right side
    268,145.43x = 43,527,368,988.14
  5. Step 5: Solve for x
    x = 43,527,368,988.14/268,145.43
  6. Step 6: Final answer
    x = 162,327.47

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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.