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Finding the Fourth Proportional to 268,451.44, 402,679.59 and 81,462.94

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Solution

The fourth proportional to 268,451.44, 402,679.59 and 81,462.94 is: 122,195.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,451.44 : 402,679.59 = 81,462.94 : x
  2. Step 2: Convert to fraction form
    268,451.44/402,679.59 = 81,462.94/x
  3. Step 3: Cross multiply
    268,451.44x = 402,679.59 × 81,462.94
  4. Step 4: Simplify right side
    268,451.44x = 32,803,461,967.21
  5. Step 5: Solve for x
    x = 32,803,461,967.21/268,451.44
  6. Step 6: Final answer
    x = 122,195.14

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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.