Home / 218,619.40-327,929.10-100,521.40

Finding the Fourth Proportional to 218,619.40, 327,929.10 and 100,521.40

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Solution

The fourth proportional to 218,619.40, 327,929.10 and 100,521.40 is: 150,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,619.40 : 327,929.10 = 100,521.40 : x
  2. Step 2: Convert to fraction form
    218,619.40/327,929.10 = 100,521.40/x
  3. Step 3: Cross multiply
    218,619.40x = 327,929.10 × 100,521.40
  4. Step 4: Simplify right side
    218,619.40x = 32,963,892,232.74
  5. Step 5: Solve for x
    x = 32,963,892,232.74/218,619.40
  6. Step 6: Final answer
    x = 150,782.10

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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.