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Finding the Fourth Proportional to 254,257.80, 381,386.70 and 64,717.80

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Solution

The fourth proportional to 254,257.80, 381,386.70 and 64,717.80 is: 97,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,257.80 : 381,386.70 = 64,717.80 : x
  2. Step 2: Convert to fraction form
    254,257.80/381,386.70 = 64,717.80/x
  3. Step 3: Cross multiply
    254,257.80x = 381,386.70 × 64,717.80
  4. Step 4: Simplify right side
    254,257.80x = 24,682,508,173.26
  5. Step 5: Solve for x
    x = 24,682,508,173.26/254,257.80
  6. Step 6: Final answer
    x = 97,076.70

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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.