Home / 268,333.07-402,572.19-90,840.09

Finding the Fourth Proportional to 268,333.07, 402,572.19 and 90,840.09

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Solution

The fourth proportional to 268,333.07, 402,572.19 and 90,840.09 is: 136,284.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,333.07 : 402,572.19 = 90,840.09 : x
  2. Step 2: Convert to fraction form
    268,333.07/402,572.19 = 90,840.09/x
  3. Step 3: Cross multiply
    268,333.07x = 402,572.19 × 90,840.09
  4. Step 4: Simplify right side
    268,333.07x = 36,569,693,971.10
  5. Step 5: Solve for x
    x = 36,569,693,971.10/268,333.07
  6. Step 6: Final answer
    x = 136,284.71

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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.