Home / 387,847.32-535,216.68-215,764.44

Finding the Fourth Proportional to 387,847.32, 535,216.68 and 215,764.44

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Solution

The fourth proportional to 387,847.32, 535,216.68 and 215,764.44 is: 297,747.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,847.32 : 535,216.68 = 215,764.44 : x
  2. Step 2: Convert to fraction form
    387,847.32/535,216.68 = 215,764.44/x
  3. Step 3: Cross multiply
    387,847.32x = 535,216.68 × 215,764.44
  4. Step 4: Simplify right side
    387,847.32x = 115,480,727,238.86
  5. Step 5: Solve for x
    x = 115,480,727,238.86/387,847.32
  6. Step 6: Final answer
    x = 297,747.91

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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.