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Finding the Fourth Proportional to 268,215.60, 402,323.40 and 81,227.10

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Solution

The fourth proportional to 268,215.60, 402,323.40 and 81,227.10 is: 121,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,215.60 : 402,323.40 = 81,227.10 : x
  2. Step 2: Convert to fraction form
    268,215.60/402,323.40 = 81,227.10/x
  3. Step 3: Cross multiply
    268,215.60x = 402,323.40 × 81,227.10
  4. Step 4: Simplify right side
    268,215.60x = 32,679,563,044.14
  5. Step 5: Solve for x
    x = 32,679,563,044.14/268,215.60
  6. Step 6: Final answer
    x = 121,840.65

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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.