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Finding the Fourth Proportional to 440,061.60, 660,529.80 and 215,675.40

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Solution

The fourth proportional to 440,061.60, 660,529.80 and 215,675.40 is: 323,727.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,061.60 : 660,529.80 = 215,675.40 : x
  2. Step 2: Convert to fraction form
    440,061.60/660,529.80 = 215,675.40/x
  3. Step 3: Cross multiply
    440,061.60x = 660,529.80 × 215,675.40
  4. Step 4: Simplify right side
    440,061.60x = 142,460,028,826.92
  5. Step 5: Solve for x
    x = 142,460,028,826.92/440,061.60
  6. Step 6: Final answer
    x = 323,727.47

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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.