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Finding the Fourth Proportional to 440,040.94, 660,286.49 and 209,490.46

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Solution

The fourth proportional to 440,040.94, 660,286.49 and 209,490.46 is: 314,342.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,040.94 : 660,286.49 = 209,490.46 : x
  2. Step 2: Convert to fraction form
    440,040.94/660,286.49 = 209,490.46/x
  3. Step 3: Cross multiply
    440,040.94x = 660,286.49 × 209,490.46
  4. Step 4: Simplify right side
    440,040.94x = 138,323,717,744.18
  5. Step 5: Solve for x
    x = 138,323,717,744.18/440,040.94
  6. Step 6: Final answer
    x = 314,342.84

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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.