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Finding the Fourth Proportional to 287,095.14, 396,737.64 and 215,350.56

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Solution

The fourth proportional to 287,095.14, 396,737.64 and 215,350.56 is: 297,593.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,095.14 : 396,737.64 = 215,350.56 : x
  2. Step 2: Convert to fraction form
    287,095.14/396,737.64 = 215,350.56/x
  3. Step 3: Cross multiply
    287,095.14x = 396,737.64 × 215,350.56
  4. Step 4: Simplify right side
    287,095.14x = 85,437,672,947.08
  5. Step 5: Solve for x
    x = 85,437,672,947.08/287,095.14
  6. Step 6: Final answer
    x = 297,593.59

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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.