Home / 281,002.43-421,306.47-103,486.65

Finding the Fourth Proportional to 281,002.43, 421,306.47 and 103,486.65

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Solution

The fourth proportional to 281,002.43, 421,306.47 and 103,486.65 is: 155,157.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,002.43 : 421,306.47 = 103,486.65 : x
  2. Step 2: Convert to fraction form
    281,002.43/421,306.47 = 103,486.65/x
  3. Step 3: Cross multiply
    281,002.43x = 421,306.47 × 103,486.65
  4. Step 4: Simplify right side
    281,002.43x = 43,599,595,203.63
  5. Step 5: Solve for x
    x = 43,599,595,203.63/281,002.43
  6. Step 6: Final answer
    x = 155,157.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.