Home / 261,301.28-391,893.60-103,565.12

Finding the Fourth Proportional to 261,301.28, 391,893.60 and 103,565.12

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Solution

The fourth proportional to 261,301.28, 391,893.60 and 103,565.12 is: 155,324.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,301.28 : 391,893.60 = 103,565.12 : x
  2. Step 2: Convert to fraction form
    261,301.28/391,893.60 = 103,565.12/x
  3. Step 3: Cross multiply
    261,301.28x = 391,893.60 × 103,565.12
  4. Step 4: Simplify right side
    261,301.28x = 40,586,507,711.23
  5. Step 5: Solve for x
    x = 40,586,507,711.23/261,301.28
  6. Step 6: Final answer
    x = 155,324.57

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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.