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Finding the Fourth Proportional to 453,484.80, 680,227.20 and 137,941.20

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Solution

The fourth proportional to 453,484.80, 680,227.20 and 137,941.20 is: 206,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,484.80 : 680,227.20 = 137,941.20 : x
  2. Step 2: Convert to fraction form
    453,484.80/680,227.20 = 137,941.20/x
  3. Step 3: Cross multiply
    453,484.80x = 680,227.20 × 137,941.20
  4. Step 4: Simplify right side
    453,484.80x = 93,831,356,240.64
  5. Step 5: Solve for x
    x = 93,831,356,240.64/453,484.80
  6. Step 6: Final answer
    x = 206,911.80

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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.