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Finding the Fourth Proportional to 290,778.56, 435,909.12 and 113,244.16

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Solution

The fourth proportional to 290,778.56, 435,909.12 and 113,244.16 is: 169,765.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,778.56 : 435,909.12 = 113,244.16 : x
  2. Step 2: Convert to fraction form
    290,778.56/435,909.12 = 113,244.16/x
  3. Step 3: Cross multiply
    290,778.56x = 435,909.12 × 113,244.16
  4. Step 4: Simplify right side
    290,778.56x = 49,364,162,130.74
  5. Step 5: Solve for x
    x = 49,364,162,130.74/290,778.56
  6. Step 6: Final answer
    x = 169,765.48

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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.