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Finding the Fourth Proportional to 268,946.80, 403,420.20 and 225,644.20

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Solution

The fourth proportional to 268,946.80, 403,420.20 and 225,644.20 is: 338,466.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,946.80 : 403,420.20 = 225,644.20 : x
  2. Step 2: Convert to fraction form
    268,946.80/403,420.20 = 225,644.20/x
  3. Step 3: Cross multiply
    268,946.80x = 403,420.20 × 225,644.20
  4. Step 4: Simplify right side
    268,946.80x = 91,029,428,292.84
  5. Step 5: Solve for x
    x = 91,029,428,292.84/268,946.80
  6. Step 6: Final answer
    x = 338,466.30

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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.