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Finding the Fourth Proportional to 343,843.68, 515,155.32 and 143,722.92

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Solution

The fourth proportional to 343,843.68, 515,155.32 and 143,722.92 is: 215,329.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,843.68 : 515,155.32 = 143,722.92 : x
  2. Step 2: Convert to fraction form
    343,843.68/515,155.32 = 143,722.92/x
  3. Step 3: Cross multiply
    343,843.68x = 515,155.32 × 143,722.92
  4. Step 4: Simplify right side
    343,843.68x = 74,039,626,843.93
  5. Step 5: Solve for x
    x = 74,039,626,843.93/343,843.68
  6. Step 6: Final answer
    x = 215,329.32

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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.