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Finding the Fourth Proportional to 287,217.72, 396,300.39 and 166,351.77

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Solution

The fourth proportional to 287,217.72, 396,300.39 and 166,351.77 is: 229,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,217.72 : 396,300.39 = 166,351.77 : x
  2. Step 2: Convert to fraction form
    287,217.72/396,300.39 = 166,351.77/x
  3. Step 3: Cross multiply
    287,217.72x = 396,300.39 × 166,351.77
  4. Step 4: Simplify right side
    287,217.72x = 65,925,271,328.19
  5. Step 5: Solve for x
    x = 65,925,271,328.19/287,217.72
  6. Step 6: Final answer
    x = 229,530.65

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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.