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Finding the Fourth Proportional to 545,530.80, 818,296.20 and 309,334.80

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Solution

The fourth proportional to 545,530.80, 818,296.20 and 309,334.80 is: 464,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,530.80 : 818,296.20 = 309,334.80 : x
  2. Step 2: Convert to fraction form
    545,530.80/818,296.20 = 309,334.80/x
  3. Step 3: Cross multiply
    545,530.80x = 818,296.20 × 309,334.80
  4. Step 4: Simplify right side
    545,530.80x = 253,127,491,367.76
  5. Step 5: Solve for x
    x = 253,127,491,367.76/545,530.80
  6. Step 6: Final answer
    x = 464,002.20

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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.