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Finding the Fourth Proportional to 453,847.66, 680,771.55 and 138,304.78

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Solution

The fourth proportional to 453,847.66, 680,771.55 and 138,304.78 is: 207,457.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,847.66 : 680,771.55 = 138,304.78 : x
  2. Step 2: Convert to fraction form
    453,847.66/680,771.55 = 138,304.78/x
  3. Step 3: Cross multiply
    453,847.66x = 680,771.55 × 138,304.78
  4. Step 4: Simplify right side
    453,847.66x = 94,153,959,453.01
  5. Step 5: Solve for x
    x = 94,153,959,453.01/453,847.66
  6. Step 6: Final answer
    x = 207,457.19

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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.