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Finding the Fourth Proportional to 305,524.40, 421,528.28 and 176,446.32

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Solution

The fourth proportional to 305,524.40, 421,528.28 and 176,446.32 is: 243,440.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,524.40 : 421,528.28 = 176,446.32 : x
  2. Step 2: Convert to fraction form
    305,524.40/421,528.28 = 176,446.32/x
  3. Step 3: Cross multiply
    305,524.40x = 421,528.28 × 176,446.32
  4. Step 4: Simplify right side
    305,524.40x = 74,377,113,781.93
  5. Step 5: Solve for x
    x = 74,377,113,781.93/305,524.40
  6. Step 6: Final answer
    x = 243,440.83

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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.