Home / 261,498.16-391,902.66-103,640.56

Finding the Fourth Proportional to 261,498.16, 391,902.66 and 103,640.56

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Solution

The fourth proportional to 261,498.16, 391,902.66 and 103,640.56 is: 155,324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,498.16 : 391,902.66 = 103,640.56 : x
  2. Step 2: Convert to fraction form
    261,498.16/391,902.66 = 103,640.56/x
  3. Step 3: Cross multiply
    261,498.16x = 391,902.66 × 103,640.56
  4. Step 4: Simplify right side
    261,498.16x = 40,617,011,147.89
  5. Step 5: Solve for x
    x = 40,617,011,147.89/261,498.16
  6. Step 6: Final answer
    x = 155,324.27

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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.