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Finding the Fourth Proportional to 402,239.16, 555,062.76 and 220,958.73

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Solution

The fourth proportional to 402,239.16, 555,062.76 and 220,958.73 is: 304,908.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,239.16 : 555,062.76 = 220,958.73 : x
  2. Step 2: Convert to fraction form
    402,239.16/555,062.76 = 220,958.73/x
  3. Step 3: Cross multiply
    402,239.16x = 555,062.76 × 220,958.73
  4. Step 4: Simplify right side
    402,239.16x = 122,645,962,519.90
  5. Step 5: Solve for x
    x = 122,645,962,519.90/402,239.16
  6. Step 6: Final answer
    x = 304,908.06

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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.