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Finding the Fourth Proportional to 280,169.28, 386,617.86 and 159,339.96

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Solution

The fourth proportional to 280,169.28, 386,617.86 and 159,339.96 is: 219,880.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,169.28 : 386,617.86 = 159,339.96 : x
  2. Step 2: Convert to fraction form
    280,169.28/386,617.86 = 159,339.96/x
  3. Step 3: Cross multiply
    280,169.28x = 386,617.86 × 159,339.96
  4. Step 4: Simplify right side
    280,169.28x = 61,603,674,347.69
  5. Step 5: Solve for x
    x = 61,603,674,347.69/280,169.28
  6. Step 6: Final answer
    x = 219,880.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.