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Finding the Fourth Proportional to 261,425.40, 392,038.47 and 111,734.97

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Solution

The fourth proportional to 261,425.40, 392,038.47 and 111,734.97 is: 167,559.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,425.40 : 392,038.47 = 111,734.97 : x
  2. Step 2: Convert to fraction form
    261,425.40/392,038.47 = 111,734.97/x
  3. Step 3: Cross multiply
    261,425.40x = 392,038.47 × 111,734.97
  4. Step 4: Simplify right side
    261,425.40x = 43,804,406,684.30
  5. Step 5: Solve for x
    x = 43,804,406,684.30/261,425.40
  6. Step 6: Final answer
    x = 167,559.87

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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.