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Finding the Fourth Proportional to 768,805.80, 1,153,318.76 and 236,371.53

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Solution

The fourth proportional to 768,805.80, 1,153,318.76 and 236,371.53 is: 354,591.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,805.80 : 1,153,318.76 = 236,371.53 : x
  2. Step 2: Convert to fraction form
    768,805.80/1,153,318.76 = 236,371.53/x
  3. Step 3: Cross multiply
    768,805.80x = 1,153,318.76 × 236,371.53
  4. Step 4: Simplify right side
    768,805.80x = 272,611,718,697.05
  5. Step 5: Solve for x
    x = 272,611,718,697.05/768,805.80
  6. Step 6: Final answer
    x = 354,591.13

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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.