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Finding the Fourth Proportional to 219,722.80, 329,065.80 and 149,220.40

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Solution

The fourth proportional to 219,722.80, 329,065.80 and 149,220.40 is: 223,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,722.80 : 329,065.80 = 149,220.40 : x
  2. Step 2: Convert to fraction form
    219,722.80/329,065.80 = 149,220.40/x
  3. Step 3: Cross multiply
    219,722.80x = 329,065.80 × 149,220.40
  4. Step 4: Simplify right side
    219,722.80x = 49,103,330,302.32
  5. Step 5: Solve for x
    x = 49,103,330,302.32/219,722.80
  6. Step 6: Final answer
    x = 223,478.54

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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.