Home / 321,350.16-443,489.76-178,155.12

Finding the Fourth Proportional to 321,350.16, 443,489.76 and 178,155.12

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Solution

The fourth proportional to 321,350.16, 443,489.76 and 178,155.12 is: 245,868.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,350.16 : 443,489.76 = 178,155.12 : x
  2. Step 2: Convert to fraction form
    321,350.16/443,489.76 = 178,155.12/x
  3. Step 3: Cross multiply
    321,350.16x = 443,489.76 × 178,155.12
  4. Step 4: Simplify right side
    321,350.16x = 79,009,971,411.57
  5. Step 5: Solve for x
    x = 79,009,971,411.57/321,350.16
  6. Step 6: Final answer
    x = 245,868.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.