Home / 221,022.86-329,450.72-209,803.55

Finding the Fourth Proportional to 221,022.86, 329,450.72 and 209,803.55

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Solution

The fourth proportional to 221,022.86, 329,450.72 and 209,803.55 is: 312,727.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,022.86 : 329,450.72 = 209,803.55 : x
  2. Step 2: Convert to fraction form
    221,022.86/329,450.72 = 209,803.55/x
  3. Step 3: Cross multiply
    221,022.86x = 329,450.72 × 209,803.55
  4. Step 4: Simplify right side
    221,022.86x = 69,119,927,909.78
  5. Step 5: Solve for x
    x = 69,119,927,909.78/221,022.86
  6. Step 6: Final answer
    x = 312,727.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.