Home / 442,949.40-663,986.70-218,125.80

Finding the Fourth Proportional to 442,949.40, 663,986.70 and 218,125.80

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Solution

The fourth proportional to 442,949.40, 663,986.70 and 218,125.80 is: 326,973.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,949.40 : 663,986.70 = 218,125.80 : x
  2. Step 2: Convert to fraction form
    442,949.40/663,986.70 = 218,125.80/x
  3. Step 3: Cross multiply
    442,949.40x = 663,986.70 × 218,125.80
  4. Step 4: Simplify right side
    442,949.40x = 144,832,630,126.86
  5. Step 5: Solve for x
    x = 144,832,630,126.86/442,949.40
  6. Step 6: Final answer
    x = 326,973.31

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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.