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Finding the Fourth Proportional to 220,445.69, 304,238.82 and 124,942.13

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Solution

The fourth proportional to 220,445.69, 304,238.82 and 124,942.13 is: 172,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,445.69 : 304,238.82 = 124,942.13 : x
  2. Step 2: Convert to fraction form
    220,445.69/304,238.82 = 124,942.13/x
  3. Step 3: Cross multiply
    220,445.69x = 304,238.82 × 124,942.13
  4. Step 4: Simplify right side
    220,445.69x = 38,012,246,199.49
  5. Step 5: Solve for x
    x = 38,012,246,199.49/220,445.69
  6. Step 6: Final answer
    x = 172,433.61

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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.