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Finding the Fourth Proportional to 221,881.55, 306,344.19 and 131,266.55

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Solution

The fourth proportional to 221,881.55, 306,344.19 and 131,266.55 is: 181,235.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,881.55 : 306,344.19 = 131,266.55 : x
  2. Step 2: Convert to fraction form
    221,881.55/306,344.19 = 131,266.55/x
  3. Step 3: Cross multiply
    221,881.55x = 306,344.19 × 131,266.55
  4. Step 4: Simplify right side
    221,881.55x = 40,212,744,933.84
  5. Step 5: Solve for x
    x = 40,212,744,933.84/221,881.55
  6. Step 6: Final answer
    x = 181,235.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.