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Finding the Fourth Proportional to 218,863.90, 328,101.45 and 130,023.10

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Solution

The fourth proportional to 218,863.90, 328,101.45 and 130,023.10 is: 194,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,863.90 : 328,101.45 = 130,023.10 : x
  2. Step 2: Convert to fraction form
    218,863.90/328,101.45 = 130,023.10/x
  3. Step 3: Cross multiply
    218,863.90x = 328,101.45 × 130,023.10
  4. Step 4: Simplify right side
    218,863.90x = 42,660,767,643.50
  5. Step 5: Solve for x
    x = 42,660,767,643.50/218,863.90
  6. Step 6: Final answer
    x = 194,919.16

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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.