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Finding the Fourth Proportional to 235,399.32, 353,092.43 and 85,642.36

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Solution

The fourth proportional to 235,399.32, 353,092.43 and 85,642.36 is: 128,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,399.32 : 353,092.43 = 85,642.36 : x
  2. Step 2: Convert to fraction form
    235,399.32/353,092.43 = 85,642.36/x
  3. Step 3: Cross multiply
    235,399.32x = 353,092.43 × 85,642.36
  4. Step 4: Simplify right side
    235,399.32x = 30,239,668,334.71
  5. Step 5: Solve for x
    x = 30,239,668,334.71/235,399.32
  6. Step 6: Final answer
    x = 128,461.15

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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.