Home / 221,890.67-306,230.55-131,275.76

Finding the Fourth Proportional to 221,890.67, 306,230.55 and 131,275.76

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Solution

The fourth proportional to 221,890.67, 306,230.55 and 131,275.76 is: 181,173.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,890.67 : 306,230.55 = 131,275.76 : x
  2. Step 2: Convert to fraction form
    221,890.67/306,230.55 = 131,275.76/x
  3. Step 3: Cross multiply
    221,890.67x = 306,230.55 × 131,275.76
  4. Step 4: Simplify right side
    221,890.67x = 40,200,648,952.04
  5. Step 5: Solve for x
    x = 40,200,648,952.04/221,890.67
  6. Step 6: Final answer
    x = 181,173.23

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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.