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Finding the Fourth Proportional to 402,545, 555,526.72 and 221,270.73

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Solution

The fourth proportional to 402,545, 555,526.72 and 221,270.73 is: 305,361.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,545 : 555,526.72 = 221,270.73 : x
  2. Step 2: Convert to fraction form
    402,545/555,526.72 = 221,270.73/x
  3. Step 3: Cross multiply
    402,545x = 555,526.72 × 221,270.73
  4. Step 4: Simplify right side
    402,545x = 122,921,802,868.91
  5. Step 5: Solve for x
    x = 122,921,802,868.91/402,545
  6. Step 6: Final answer
    x = 305,361.64

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.