Home / 212,517.36-318,637.44-98,618.40

Finding the Fourth Proportional to 212,517.36, 318,637.44 and 98,618.40

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Solution

The fourth proportional to 212,517.36, 318,637.44 and 98,618.40 is: 147,863.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,517.36 : 318,637.44 = 98,618.40 : x
  2. Step 2: Convert to fraction form
    212,517.36/318,637.44 = 98,618.40/x
  3. Step 3: Cross multiply
    212,517.36x = 318,637.44 × 98,618.40
  4. Step 4: Simplify right side
    212,517.36x = 31,423,514,512.90
  5. Step 5: Solve for x
    x = 31,423,514,512.90/212,517.36
  6. Step 6: Final answer
    x = 147,863.28

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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.