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Finding the Fourth Proportional to 440,409.77, 660,718.09 and 136,788.43

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Solution

The fourth proportional to 440,409.77, 660,718.09 and 136,788.43 is: 205,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,409.77 : 660,718.09 = 136,788.43 : x
  2. Step 2: Convert to fraction form
    440,409.77/660,718.09 = 136,788.43/x
  3. Step 3: Cross multiply
    440,409.77x = 660,718.09 × 136,788.43
  4. Step 4: Simplify right side
    440,409.77x = 90,378,586,900.11
  5. Step 5: Solve for x
    x = 90,378,586,900.11/440,409.77
  6. Step 6: Final answer
    x = 205,214.76

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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.