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Finding the Fourth Proportional to 303,472.20, 455,208.30 and 191,279.10

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Solution

The fourth proportional to 303,472.20, 455,208.30 and 191,279.10 is: 286,918.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,472.20 : 455,208.30 = 191,279.10 : x
  2. Step 2: Convert to fraction form
    303,472.20/455,208.30 = 191,279.10/x
  3. Step 3: Cross multiply
    303,472.20x = 455,208.30 × 191,279.10
  4. Step 4: Simplify right side
    303,472.20x = 87,071,833,936.53
  5. Step 5: Solve for x
    x = 87,071,833,936.53/303,472.20
  6. Step 6: Final answer
    x = 286,918.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.