Home / 442,946.40-663,982.20-218,122.80

Finding the Fourth Proportional to 442,946.40, 663,982.20 and 218,122.80

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Solution

The fourth proportional to 442,946.40, 663,982.20 and 218,122.80 is: 326,968.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,946.40 : 663,982.20 = 218,122.80 : x
  2. Step 2: Convert to fraction form
    442,946.40/663,982.20 = 218,122.80/x
  3. Step 3: Cross multiply
    442,946.40x = 663,982.20 × 218,122.80
  4. Step 4: Simplify right side
    442,946.40x = 144,829,656,614.16
  5. Step 5: Solve for x
    x = 144,829,656,614.16/442,946.40
  6. Step 6: Final answer
    x = 326,968.81

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1.5x scale

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.