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Finding the Fourth Proportional to 235,479.56, 353,231.55 and 77,720.31

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Solution

The fourth proportional to 235,479.56, 353,231.55 and 77,720.31 is: 116,584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,479.56 : 353,231.55 = 77,720.31 : x
  2. Step 2: Convert to fraction form
    235,479.56/353,231.55 = 77,720.31/x
  3. Step 3: Cross multiply
    235,479.56x = 353,231.55 × 77,720.31
  4. Step 4: Simplify right side
    235,479.56x = 27,453,265,567.78
  5. Step 5: Solve for x
    x = 27,453,265,567.78/235,479.56
  6. Step 6: Final answer
    x = 116,584.49

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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.