Home / 261,811.47-392,709.39-72,283.41

Finding the Fourth Proportional to 261,811.47, 392,709.39 and 72,283.41

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Solution

The fourth proportional to 261,811.47, 392,709.39 and 72,283.41 is: 108,422.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,811.47 : 392,709.39 = 72,283.41 : x
  2. Step 2: Convert to fraction form
    261,811.47/392,709.39 = 72,283.41/x
  3. Step 3: Cross multiply
    261,811.47x = 392,709.39 × 72,283.41
  4. Step 4: Simplify right side
    261,811.47x = 28,386,373,848.22
  5. Step 5: Solve for x
    x = 28,386,373,848.22/261,811.47
  6. Step 6: Final answer
    x = 108,422.96

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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.