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Finding the Fourth Proportional to 171,279.78, 256,962.48 and 64,663.50

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Solution

The fourth proportional to 171,279.78, 256,962.48 and 64,663.50 is: 97,011.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,279.78 : 256,962.48 = 64,663.50 : x
  2. Step 2: Convert to fraction form
    171,279.78/256,962.48 = 64,663.50/x
  3. Step 3: Cross multiply
    171,279.78x = 256,962.48 × 64,663.50
  4. Step 4: Simplify right side
    171,279.78x = 16,616,093,325.48
  5. Step 5: Solve for x
    x = 16,616,093,325.48/171,279.78
  6. Step 6: Final answer
    x = 97,011.41

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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.