Home / 287,758.27-397,091.80-158,719.20

Finding the Fourth Proportional to 287,758.27, 397,091.80 and 158,719.20

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Solution

The fourth proportional to 287,758.27, 397,091.80 and 158,719.20 is: 219,024.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,758.27 : 397,091.80 = 158,719.20 : x
  2. Step 2: Convert to fraction form
    287,758.27/397,091.80 = 158,719.20/x
  3. Step 3: Cross multiply
    287,758.27x = 397,091.80 × 158,719.20
  4. Step 4: Simplify right side
    287,758.27x = 63,026,092,822.56
  5. Step 5: Solve for x
    x = 63,026,092,822.56/287,758.27
  6. Step 6: Final answer
    x = 219,024.44

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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.