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Finding the Fourth Proportional to 221,406.10, 332,109.15 and 71,657.35

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Solution

The fourth proportional to 221,406.10, 332,109.15 and 71,657.35 is: 107,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,406.10 : 332,109.15 = 71,657.35 : x
  2. Step 2: Convert to fraction form
    221,406.10/332,109.15 = 71,657.35/x
  3. Step 3: Cross multiply
    221,406.10x = 332,109.15 × 71,657.35
  4. Step 4: Simplify right side
    221,406.10x = 23,798,061,599.75
  5. Step 5: Solve for x
    x = 23,798,061,599.75/221,406.10
  6. Step 6: Final answer
    x = 107,486.03

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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.