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Finding the Fourth Proportional to 280,281.72, 386,797.32 and 159,440.52

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Solution

The fourth proportional to 280,281.72, 386,797.32 and 159,440.52 is: 220,032.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,281.72 : 386,797.32 = 159,440.52 : x
  2. Step 2: Convert to fraction form
    280,281.72/386,797.32 = 159,440.52/x
  3. Step 3: Cross multiply
    280,281.72x = 386,797.32 × 159,440.52
  4. Step 4: Simplify right side
    280,281.72x = 61,671,165,835.41
  5. Step 5: Solve for x
    x = 61,671,165,835.41/280,281.72
  6. Step 6: Final answer
    x = 220,032.78

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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.