Home / 268,318.58-402,453.09-90,805.19

Finding the Fourth Proportional to 268,318.58, 402,453.09 and 90,805.19

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Solution

The fourth proportional to 268,318.58, 402,453.09 and 90,805.19 is: 136,199.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,318.58 : 402,453.09 = 90,805.19 : x
  2. Step 2: Convert to fraction form
    268,318.58/402,453.09 = 90,805.19/x
  3. Step 3: Cross multiply
    268,318.58x = 402,453.09 × 90,805.19
  4. Step 4: Simplify right side
    268,318.58x = 36,544,827,291.27
  5. Step 5: Solve for x
    x = 36,544,827,291.27/268,318.58
  6. Step 6: Final answer
    x = 136,199.39

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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.