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Finding the Fourth Proportional to 268,019.60, 402,040.56 and 90,544.64

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Solution

The fourth proportional to 268,019.60, 402,040.56 and 90,544.64 is: 135,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,019.60 : 402,040.56 = 90,544.64 : x
  2. Step 2: Convert to fraction form
    268,019.60/402,040.56 = 90,544.64/x
  3. Step 3: Cross multiply
    268,019.60x = 402,040.56 × 90,544.64
  4. Step 4: Simplify right side
    268,019.60x = 36,402,617,770.60
  5. Step 5: Solve for x
    x = 36,402,617,770.60/268,019.60
  6. Step 6: Final answer
    x = 135,820.73

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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.