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Finding the Fourth Proportional to 402,562.95, 555,525.43 and 221,274.82

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Solution

The fourth proportional to 402,562.95, 555,525.43 and 221,274.82 is: 305,352.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,562.95 : 555,525.43 = 221,274.82 : x
  2. Step 2: Convert to fraction form
    402,562.95/555,525.43 = 221,274.82/x
  3. Step 3: Cross multiply
    402,562.95x = 555,525.43 × 221,274.82
  4. Step 4: Simplify right side
    402,562.95x = 122,923,789,528.67
  5. Step 5: Solve for x
    x = 122,923,789,528.67/402,562.95
  6. Step 6: Final answer
    x = 305,352.96

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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.