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Finding the Fourth Proportional to 286,586.23, 429,471.97 and 211,112.86

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Solution

The fourth proportional to 286,586.23, 429,471.97 and 211,112.86 is: 316,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,586.23 : 429,471.97 = 211,112.86 : x
  2. Step 2: Convert to fraction form
    286,586.23/429,471.97 = 211,112.86/x
  3. Step 3: Cross multiply
    286,586.23x = 429,471.97 × 211,112.86
  4. Step 4: Simplify right side
    286,586.23x = 90,667,055,876.53
  5. Step 5: Solve for x
    x = 90,667,055,876.53/286,586.23
  6. Step 6: Final answer
    x = 316,369.20

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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.