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Finding the Fourth Proportional to 221,900.63, 306,224.27 and 119,925.85

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Solution

The fourth proportional to 221,900.63, 306,224.27 and 119,925.85 is: 165,498.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,900.63 : 306,224.27 = 119,925.85 : x
  2. Step 2: Convert to fraction form
    221,900.63/306,224.27 = 119,925.85/x
  3. Step 3: Cross multiply
    221,900.63x = 306,224.27 × 119,925.85
  4. Step 4: Simplify right side
    221,900.63x = 36,724,205,870.38
  5. Step 5: Solve for x
    x = 36,724,205,870.38/221,900.63
  6. Step 6: Final answer
    x = 165,498.43

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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.