Home / 387,853.20-535,231.08-215,769.24

Finding the Fourth Proportional to 387,853.20, 535,231.08 and 215,769.24

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Solution

The fourth proportional to 387,853.20, 535,231.08 and 215,769.24 is: 297,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,853.20 : 535,231.08 = 215,769.24 : x
  2. Step 2: Convert to fraction form
    387,853.20/535,231.08 = 215,769.24/x
  3. Step 3: Cross multiply
    387,853.20x = 535,231.08 × 215,769.24
  4. Step 4: Simplify right side
    387,853.20x = 115,486,403,355.98
  5. Step 5: Solve for x
    x = 115,486,403,355.98/387,853.20
  6. Step 6: Final answer
    x = 297,758.03

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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.