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Finding the Fourth Proportional to 219,808.90, 329,713.35 and 131,235.40

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Solution

The fourth proportional to 219,808.90, 329,713.35 and 131,235.40 is: 196,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,808.90 : 329,713.35 = 131,235.40 : x
  2. Step 2: Convert to fraction form
    219,808.90/329,713.35 = 131,235.40/x
  3. Step 3: Cross multiply
    219,808.90x = 329,713.35 × 131,235.40
  4. Step 4: Simplify right side
    219,808.90x = 43,270,063,372.59
  5. Step 5: Solve for x
    x = 43,270,063,372.59/219,808.90
  6. Step 6: Final answer
    x = 196,853.10

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1.5x scale

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.