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Finding the Fourth Proportional to 268,035.72, 402,043.60 and 68,354.20

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Solution

The fourth proportional to 268,035.72, 402,043.60 and 68,354.20 is: 102,528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,035.72 : 402,043.60 = 68,354.20 : x
  2. Step 2: Convert to fraction form
    268,035.72/402,043.60 = 68,354.20/x
  3. Step 3: Cross multiply
    268,035.72x = 402,043.60 × 68,354.20
  4. Step 4: Simplify right side
    268,035.72x = 27,481,368,643.12
  5. Step 5: Solve for x
    x = 27,481,368,643.12/268,035.72
  6. Step 6: Final answer
    x = 102,528.75

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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.