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Finding the Fourth Proportional to 249,990.76, 375,025.24 and 81,471.93

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Solution

The fourth proportional to 249,990.76, 375,025.24 and 81,471.93 is: 122,220.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,990.76 : 375,025.24 = 81,471.93 : x
  2. Step 2: Convert to fraction form
    249,990.76/375,025.24 = 81,471.93/x
  3. Step 3: Cross multiply
    249,990.76x = 375,025.24 × 81,471.93
  4. Step 4: Simplify right side
    249,990.76x = 30,554,028,797.01
  5. Step 5: Solve for x
    x = 30,554,028,797.01/249,990.76
  6. Step 6: Final answer
    x = 122,220.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.