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Finding the Fourth Proportional to 261,871.46, 392,735.52 and 72,286.52

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Solution

The fourth proportional to 261,871.46, 392,735.52 and 72,286.52 is: 108,410.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,871.46 : 392,735.52 = 72,286.52 : x
  2. Step 2: Convert to fraction form
    261,871.46/392,735.52 = 72,286.52/x
  3. Step 3: Cross multiply
    261,871.46x = 392,735.52 × 72,286.52
  4. Step 4: Simplify right side
    261,871.46x = 28,389,484,021.19
  5. Step 5: Solve for x
    x = 28,389,484,021.19/261,871.46
  6. Step 6: Final answer
    x = 108,410.00

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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.