Home / 281,048.20-387,855.76-153,723.76

Finding the Fourth Proportional to 281,048.20, 387,855.76 and 153,723.76

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Solution

The fourth proportional to 281,048.20, 387,855.76 and 153,723.76 is: 212,143.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,048.20 : 387,855.76 = 153,723.76 : x
  2. Step 2: Convert to fraction form
    281,048.20/387,855.76 = 153,723.76/x
  3. Step 3: Cross multiply
    281,048.20x = 387,855.76 × 153,723.76
  4. Step 4: Simplify right side
    281,048.20x = 59,622,645,764.86
  5. Step 5: Solve for x
    x = 59,622,645,764.86/281,048.20
  6. Step 6: Final answer
    x = 212,143.84

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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.