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Finding the Fourth Proportional to 280,652.91, 387,301.40 and 159,794.25

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Solution

The fourth proportional to 280,652.91, 387,301.40 and 159,794.25 is: 220,516.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,652.91 : 387,301.40 = 159,794.25 : x
  2. Step 2: Convert to fraction form
    280,652.91/387,301.40 = 159,794.25/x
  3. Step 3: Cross multiply
    280,652.91x = 387,301.40 × 159,794.25
  4. Step 4: Simplify right side
    280,652.91x = 61,888,535,937.98
  5. Step 5: Solve for x
    x = 61,888,535,937.98/280,652.91
  6. Step 6: Final answer
    x = 220,516.28

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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.