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Finding the Fourth Proportional to 280,179.38, 386,639.25 and 159,333.86

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Solution

The fourth proportional to 280,179.38, 386,639.25 and 159,333.86 is: 219,876.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,179.38 : 386,639.25 = 159,333.86 : x
  2. Step 2: Convert to fraction form
    280,179.38/386,639.25 = 159,333.86/x
  3. Step 3: Cross multiply
    280,179.38x = 386,639.25 × 159,333.86
  4. Step 4: Simplify right side
    280,179.38x = 61,604,724,130.01
  5. Step 5: Solve for x
    x = 61,604,724,130.01/280,179.38
  6. Step 6: Final answer
    x = 219,876.01

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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.