Home / 453,531.80-680,396.10-137,980.50

Finding the Fourth Proportional to 453,531.80, 680,396.10 and 137,980.50

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Solution

The fourth proportional to 453,531.80, 680,396.10 and 137,980.50 is: 207,000.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,531.80 : 680,396.10 = 137,980.50 : x
  2. Step 2: Convert to fraction form
    453,531.80/680,396.10 = 137,980.50/x
  3. Step 3: Cross multiply
    453,531.80x = 680,396.10 × 137,980.50
  4. Step 4: Simplify right side
    453,531.80x = 93,881,394,076.05
  5. Step 5: Solve for x
    x = 93,881,394,076.05/453,531.80
  6. Step 6: Final answer
    x = 207,000.69

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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.