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Finding the Fourth Proportional to 491,279.60, 736,919.40 and 255,083.60

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Solution

The fourth proportional to 491,279.60, 736,919.40 and 255,083.60 is: 382,625.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,279.60 : 736,919.40 = 255,083.60 : x
  2. Step 2: Convert to fraction form
    491,279.60/736,919.40 = 255,083.60/x
  3. Step 3: Cross multiply
    491,279.60x = 736,919.40 × 255,083.60
  4. Step 4: Simplify right side
    491,279.60x = 187,976,053,461.84
  5. Step 5: Solve for x
    x = 187,976,053,461.84/491,279.60
  6. Step 6: Final answer
    x = 382,625.40

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Similar ratio
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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.