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Finding the Fourth Proportional to 402,565.54, 555,529.17 and 221,277.82

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Solution

The fourth proportional to 402,565.54, 555,529.17 and 221,277.82 is: 305,357.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,565.54 : 555,529.17 = 221,277.82 : x
  2. Step 2: Convert to fraction form
    402,565.54/555,529.17 = 221,277.82/x
  3. Step 3: Cross multiply
    402,565.54x = 555,529.17 × 221,277.82
  4. Step 4: Simplify right side
    402,565.54x = 122,926,283,684.01
  5. Step 5: Solve for x
    x = 122,926,283,684.01/402,565.54
  6. Step 6: Final answer
    x = 305,357.19

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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.