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Finding the Fourth Proportional to 300,348.52, 450,522.42 and 138,226.24

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Solution

The fourth proportional to 300,348.52, 450,522.42 and 138,226.24 is: 207,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,348.52 : 450,522.42 = 138,226.24 : x
  2. Step 2: Convert to fraction form
    300,348.52/450,522.42 = 138,226.24/x
  3. Step 3: Cross multiply
    300,348.52x = 450,522.42 × 138,226.24
  4. Step 4: Simplify right side
    300,348.52x = 62,274,020,152.30
  5. Step 5: Solve for x
    x = 62,274,020,152.30/300,348.52
  6. Step 6: Final answer
    x = 207,339.19

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1.5x scale

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.