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Finding the Fourth Proportional to 261,319.72, 391,978.14 and 95,107.72

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Solution

The fourth proportional to 261,319.72, 391,978.14 and 95,107.72 is: 142,661.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,319.72 : 391,978.14 = 95,107.72 : x
  2. Step 2: Convert to fraction form
    261,319.72/391,978.14 = 95,107.72/x
  3. Step 3: Cross multiply
    261,319.72x = 391,978.14 × 95,107.72
  4. Step 4: Simplify right side
    261,319.72x = 37,280,147,185.24
  5. Step 5: Solve for x
    x = 37,280,147,185.24/261,319.72
  6. Step 6: Final answer
    x = 142,661.06

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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.