Home / 221,323.20-331,547.40-121,304.40

Finding the Fourth Proportional to 221,323.20, 331,547.40 and 121,304.40

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Solution

The fourth proportional to 221,323.20, 331,547.40 and 121,304.40 is: 181,716.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,323.20 : 331,547.40 = 121,304.40 : x
  2. Step 2: Convert to fraction form
    221,323.20/331,547.40 = 121,304.40/x
  3. Step 3: Cross multiply
    221,323.20x = 331,547.40 × 121,304.40
  4. Step 4: Simplify right side
    221,323.20x = 40,218,158,428.56
  5. Step 5: Solve for x
    x = 40,218,158,428.56/221,323.20
  6. Step 6: Final answer
    x = 181,716.87

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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.