Home / 215,724.80-323,587.20-121,246.40

Finding the Fourth Proportional to 215,724.80, 323,587.20 and 121,246.40

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Solution

The fourth proportional to 215,724.80, 323,587.20 and 121,246.40 is: 181,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,724.80 : 323,587.20 = 121,246.40 : x
  2. Step 2: Convert to fraction form
    215,724.80/323,587.20 = 121,246.40/x
  3. Step 3: Cross multiply
    215,724.80x = 323,587.20 × 121,246.40
  4. Step 4: Simplify right side
    215,724.80x = 39,233,783,086.08
  5. Step 5: Solve for x
    x = 39,233,783,086.08/215,724.80
  6. Step 6: Final answer
    x = 181,869.60

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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.