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Finding the Fourth Proportional to 260,803.20, 391,204.80 and 243,307.20

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Solution

The fourth proportional to 260,803.20, 391,204.80 and 243,307.20 is: 364,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,803.20 : 391,204.80 = 243,307.20 : x
  2. Step 2: Convert to fraction form
    260,803.20/391,204.80 = 243,307.20/x
  3. Step 3: Cross multiply
    260,803.20x = 391,204.80 × 243,307.20
  4. Step 4: Simplify right side
    260,803.20x = 95,182,944,514.56
  5. Step 5: Solve for x
    x = 95,182,944,514.56/260,803.20
  6. Step 6: Final answer
    x = 364,960.80

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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.