Home / 387,964.15-535,385.30-218,198.27

Finding the Fourth Proportional to 387,964.15, 535,385.30 and 218,198.27

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Solution

The fourth proportional to 387,964.15, 535,385.30 and 218,198.27 is: 301,110.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,964.15 : 535,385.30 = 218,198.27 : x
  2. Step 2: Convert to fraction form
    387,964.15/535,385.30 = 218,198.27/x
  3. Step 3: Cross multiply
    387,964.15x = 535,385.30 × 218,198.27
  4. Step 4: Simplify right side
    387,964.15x = 116,820,146,490.90
  5. Step 5: Solve for x
    x = 116,820,146,490.90/387,964.15
  6. Step 6: Final answer
    x = 301,110.68

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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.