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Finding the Fourth Proportional to 402,235.86, 555,052.42 and 220,938.42

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Solution

The fourth proportional to 402,235.86, 555,052.42 and 220,938.42 is: 304,876.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,235.86 : 555,052.42 = 220,938.42 : x
  2. Step 2: Convert to fraction form
    402,235.86/555,052.42 = 220,938.42/x
  3. Step 3: Cross multiply
    402,235.86x = 555,052.42 × 220,938.42
  4. Step 4: Simplify right side
    402,235.86x = 122,632,404,691.98
  5. Step 5: Solve for x
    x = 122,632,404,691.98/402,235.86
  6. Step 6: Final answer
    x = 304,876.86

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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.