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Finding the Fourth Proportional to 268,911.46, 403,370.44 and 81,924.58

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Solution

The fourth proportional to 268,911.46, 403,370.44 and 81,924.58 is: 122,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,911.46 : 403,370.44 = 81,924.58 : x
  2. Step 2: Convert to fraction form
    268,911.46/403,370.44 = 81,924.58/x
  3. Step 3: Cross multiply
    268,911.46x = 403,370.44 × 81,924.58
  4. Step 4: Simplify right side
    268,911.46x = 33,045,953,881.42
  5. Step 5: Solve for x
    x = 33,045,953,881.42/268,911.46
  6. Step 6: Final answer
    x = 122,887.86

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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.