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Finding the Fourth Proportional to 221,365.66, 305,483.20 and 125,872.38

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Solution

The fourth proportional to 221,365.66, 305,483.20 and 125,872.38 is: 173,703.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,365.66 : 305,483.20 = 125,872.38 : x
  2. Step 2: Convert to fraction form
    221,365.66/305,483.20 = 125,872.38/x
  3. Step 3: Cross multiply
    221,365.66x = 305,483.20 × 125,872.38
  4. Step 4: Simplify right side
    221,365.66x = 38,451,897,434.02
  5. Step 5: Solve for x
    x = 38,451,897,434.02/221,365.66
  6. Step 6: Final answer
    x = 173,703.08

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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.