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Finding the Fourth Proportional to 348,595.20, 522,115.20 and 286,387.20

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Solution

The fourth proportional to 348,595.20, 522,115.20 and 286,387.20 is: 428,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,595.20 : 522,115.20 = 286,387.20 : x
  2. Step 2: Convert to fraction form
    348,595.20/522,115.20 = 286,387.20/x
  3. Step 3: Cross multiply
    348,595.20x = 522,115.20 × 286,387.20
  4. Step 4: Simplify right side
    348,595.20x = 149,527,110,205.44
  5. Step 5: Solve for x
    x = 149,527,110,205.44/348,595.20
  6. Step 6: Final answer
    x = 428,941.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.