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Finding the Fourth Proportional to 485,377,615.20, 728,066,422.80 and 178,606,250.40

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Solution

The fourth proportional to 485,377,615.20, 728,066,422.80 and 178,606,250.40 is: 267,909,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,377,615.20 : 728,066,422.80 = 178,606,250.40 : x
  2. Step 2: Convert to fraction form
    485,377,615.20/728,066,422.80 = 178,606,250.40/x
  3. Step 3: Cross multiply
    485,377,615.20x = 728,066,422.80 × 178,606,250.40
  4. Step 4: Simplify right side
    485,377,615.20x = 130,037,213,818,449,072
  5. Step 5: Solve for x
    x = 130,037,213,818,449,072/485,377,615.20
  6. Step 6: Final answer
    x = 267,909,375.60

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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.