Home / 261,002.40-391,503.60-83,515.20

Finding the Fourth Proportional to 261,002.40, 391,503.60 and 83,515.20

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Solution

The fourth proportional to 261,002.40, 391,503.60 and 83,515.20 is: 125,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,002.40 : 391,503.60 = 83,515.20 : x
  2. Step 2: Convert to fraction form
    261,002.40/391,503.60 = 83,515.20/x
  3. Step 3: Cross multiply
    261,002.40x = 391,503.60 × 83,515.20
  4. Step 4: Simplify right side
    261,002.40x = 32,696,501,454.72
  5. Step 5: Solve for x
    x = 32,696,501,454.72/261,002.40
  6. Step 6: Final answer
    x = 125,272.80

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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.