Home / 281,333.02-421,689.92-138,967.52

Finding the Fourth Proportional to 281,333.02, 421,689.92 and 138,967.52

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Solution

The fourth proportional to 281,333.02, 421,689.92 and 138,967.52 is: 208,298.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,333.02 : 421,689.92 = 138,967.52 : x
  2. Step 2: Convert to fraction form
    281,333.02/421,689.92 = 138,967.52/x
  3. Step 3: Cross multiply
    281,333.02x = 421,689.92 × 138,967.52
  4. Step 4: Simplify right side
    281,333.02x = 58,601,202,391.40
  5. Step 5: Solve for x
    x = 58,601,202,391.40/281,333.02
  6. Step 6: Final answer
    x = 208,298.34

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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.