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Finding the Fourth Proportional to 261,761.40, 392,642.10 and 235,189.35

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Solution

The fourth proportional to 261,761.40, 392,642.10 and 235,189.35 is: 352,784.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,761.40 : 392,642.10 = 235,189.35 : x
  2. Step 2: Convert to fraction form
    261,761.40/392,642.10 = 235,189.35/x
  3. Step 3: Cross multiply
    261,761.40x = 392,642.10 × 235,189.35
  4. Step 4: Simplify right side
    261,761.40x = 92,345,240,281.64
  5. Step 5: Solve for x
    x = 92,345,240,281.64/261,761.40
  6. Step 6: Final answer
    x = 352,784.03

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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.