Home / 268,486.20-402,701.56-90,988.60

Finding the Fourth Proportional to 268,486.20, 402,701.56 and 90,988.60

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Solution

The fourth proportional to 268,486.20, 402,701.56 and 90,988.60 is: 136,473.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,486.20 : 402,701.56 = 90,988.60 : x
  2. Step 2: Convert to fraction form
    268,486.20/402,701.56 = 90,988.60/x
  3. Step 3: Cross multiply
    268,486.20x = 402,701.56 × 90,988.60
  4. Step 4: Simplify right side
    268,486.20x = 36,641,251,162.22
  5. Step 5: Solve for x
    x = 36,641,251,162.22/268,486.20
  6. Step 6: Final answer
    x = 136,473.50

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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.