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Finding the Fourth Proportional to 453,530.80, 680,394.60 and 137,979.50

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Solution

The fourth proportional to 453,530.80, 680,394.60 and 137,979.50 is: 206,999.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,530.80 : 680,394.60 = 137,979.50 : x
  2. Step 2: Convert to fraction form
    453,530.80/680,394.60 = 137,979.50/x
  3. Step 3: Cross multiply
    453,530.80x = 680,394.60 × 137,979.50
  4. Step 4: Simplify right side
    453,530.80x = 93,880,506,710.70
  5. Step 5: Solve for x
    x = 93,880,506,710.70/453,530.80
  6. Step 6: Final answer
    x = 206,999.19

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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.