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Finding the Fourth Proportional to 268,280.28, 402,170.28 and 90,663.08

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Solution

The fourth proportional to 268,280.28, 402,170.28 and 90,663.08 is: 135,910.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,280.28 : 402,170.28 = 90,663.08 : x
  2. Step 2: Convert to fraction form
    268,280.28/402,170.28 = 90,663.08/x
  3. Step 3: Cross multiply
    268,280.28x = 402,170.28 × 90,663.08
  4. Step 4: Simplify right side
    268,280.28x = 36,461,996,269.26
  5. Step 5: Solve for x
    x = 36,461,996,269.26/268,280.28
  6. Step 6: Final answer
    x = 135,910.09

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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.