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Finding the Fourth Proportional to 221,463.98, 305,616.03 and 120,862.70

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Solution

The fourth proportional to 221,463.98, 305,616.03 and 120,862.70 is: 166,788.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,463.98 : 305,616.03 = 120,862.70 : x
  2. Step 2: Convert to fraction form
    221,463.98/305,616.03 = 120,862.70/x
  3. Step 3: Cross multiply
    221,463.98x = 305,616.03 × 120,862.70
  4. Step 4: Simplify right side
    221,463.98x = 36,937,578,549.08
  5. Step 5: Solve for x
    x = 36,937,578,549.08/221,463.98
  6. Step 6: Final answer
    x = 166,788.20

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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.