Home / 261,010.20-391,515.30-245,458.20

Finding the Fourth Proportional to 261,010.20, 391,515.30 and 245,458.20

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Solution

The fourth proportional to 261,010.20, 391,515.30 and 245,458.20 is: 368,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,010.20 : 391,515.30 = 245,458.20 : x
  2. Step 2: Convert to fraction form
    261,010.20/391,515.30 = 245,458.20/x
  3. Step 3: Cross multiply
    261,010.20x = 391,515.30 × 245,458.20
  4. Step 4: Simplify right side
    261,010.20x = 96,100,640,810.46
  5. Step 5: Solve for x
    x = 96,100,640,810.46/261,010.20
  6. Step 6: Final answer
    x = 368,187.30

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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.