Home / 268,275.28-402,162.78-90,658.07

Finding the Fourth Proportional to 268,275.28, 402,162.78 and 90,658.07

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Solution

The fourth proportional to 268,275.28, 402,162.78 and 90,658.07 is: 135,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,275.28 : 402,162.78 = 90,658.07 : x
  2. Step 2: Convert to fraction form
    268,275.28/402,162.78 = 90,658.07/x
  3. Step 3: Cross multiply
    268,275.28x = 402,162.78 × 90,658.07
  4. Step 4: Simplify right side
    268,275.28x = 36,459,301,460.63
  5. Step 5: Solve for x
    x = 36,459,301,460.63/268,275.28
  6. Step 6: Final answer
    x = 135,902.58

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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.