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Finding the Fourth Proportional to 453,141.60, 679,809.60 and 137,630.40

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Solution

The fourth proportional to 453,141.60, 679,809.60 and 137,630.40 is: 206,475.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,141.60 : 679,809.60 = 137,630.40 : x
  2. Step 2: Convert to fraction form
    453,141.60/679,809.60 = 137,630.40/x
  3. Step 3: Cross multiply
    453,141.60x = 679,809.60 × 137,630.40
  4. Step 4: Simplify right side
    453,141.60x = 93,562,467,171.84
  5. Step 5: Solve for x
    x = 93,562,467,171.84/453,141.60
  6. Step 6: Final answer
    x = 206,475.12

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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.