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Finding the Fourth Proportional to 261,867.44, 392,801.40 and 84,400.88

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Solution

The fourth proportional to 261,867.44, 392,801.40 and 84,400.88 is: 126,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,867.44 : 392,801.40 = 84,400.88 : x
  2. Step 2: Convert to fraction form
    261,867.44/392,801.40 = 84,400.88/x
  3. Step 3: Cross multiply
    261,867.44x = 392,801.40 × 84,400.88
  4. Step 4: Simplify right side
    261,867.44x = 33,152,783,825.23
  5. Step 5: Solve for x
    x = 33,152,783,825.23/261,867.44
  6. Step 6: Final answer
    x = 126,601.40

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Similar ratio
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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.