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Finding the Fourth Proportional to 440,339.56, 660,771.78 and 159,878.68

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Solution

The fourth proportional to 440,339.56, 660,771.78 and 159,878.68 is: 239,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,339.56 : 660,771.78 = 159,878.68 : x
  2. Step 2: Convert to fraction form
    440,339.56/660,771.78 = 159,878.68/x
  3. Step 3: Cross multiply
    440,339.56x = 660,771.78 × 159,878.68
  4. Step 4: Simplify right side
    440,339.56x = 105,643,317,716.18
  5. Step 5: Solve for x
    x = 105,643,317,716.18/440,339.56
  6. Step 6: Final answer
    x = 239,913.30

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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.