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Finding the Fourth Proportional to 440,066.60, 660,537.30 and 215,680.40

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Solution

The fourth proportional to 440,066.60, 660,537.30 and 215,680.40 is: 323,734.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,066.60 : 660,537.30 = 215,680.40 : x
  2. Step 2: Convert to fraction form
    440,066.60/660,537.30 = 215,680.40/x
  3. Step 3: Cross multiply
    440,066.60x = 660,537.30 × 215,680.40
  4. Step 4: Simplify right side
    440,066.60x = 142,464,949,078.92
  5. Step 5: Solve for x
    x = 142,464,949,078.92/440,066.60
  6. Step 6: Final answer
    x = 323,734.97

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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.