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Finding the Fourth Proportional to 290,840.65, 436,257.65 and 113,472.23

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Solution

The fourth proportional to 290,840.65, 436,257.65 and 113,472.23 is: 170,207.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,840.65 : 436,257.65 = 113,472.23 : x
  2. Step 2: Convert to fraction form
    290,840.65/436,257.65 = 113,472.23/x
  3. Step 3: Cross multiply
    290,840.65x = 436,257.65 × 113,472.23
  4. Step 4: Simplify right side
    290,840.65x = 49,503,126,502.45
  5. Step 5: Solve for x
    x = 49,503,126,502.45/290,840.65
  6. Step 6: Final answer
    x = 170,207.04

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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.