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Finding the Fourth Proportional to 261,366.28, 392,053.72 and 71,825.46

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Solution

The fourth proportional to 261,366.28, 392,053.72 and 71,825.46 is: 107,739.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,366.28 : 392,053.72 = 71,825.46 : x
  2. Step 2: Convert to fraction form
    261,366.28/392,053.72 = 71,825.46/x
  3. Step 3: Cross multiply
    261,366.28x = 392,053.72 × 71,825.46
  4. Step 4: Simplify right side
    261,366.28x = 28,159,438,783.71
  5. Step 5: Solve for x
    x = 28,159,438,783.71/261,366.28
  6. Step 6: Final answer
    x = 107,739.37

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1.5x scale

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.