Home / 218,767.40-328,151.10-209,436.20

Finding the Fourth Proportional to 218,767.40, 328,151.10 and 209,436.20

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Solution

The fourth proportional to 218,767.40, 328,151.10 and 209,436.20 is: 314,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,767.40 : 328,151.10 = 209,436.20 : x
  2. Step 2: Convert to fraction form
    218,767.40/328,151.10 = 209,436.20/x
  3. Step 3: Cross multiply
    218,767.40x = 328,151.10 × 209,436.20
  4. Step 4: Simplify right side
    218,767.40x = 68,726,719,409.82
  5. Step 5: Solve for x
    x = 68,726,719,409.82/218,767.40
  6. Step 6: Final answer
    x = 314,154.30

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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.