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Finding the Fourth Proportional to 243,058.60, 365,279.10 and 212,645.80

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Solution

The fourth proportional to 243,058.60, 365,279.10 and 212,645.80 is: 319,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,058.60 : 365,279.10 = 212,645.80 : x
  2. Step 2: Convert to fraction form
    243,058.60/365,279.10 = 212,645.80/x
  3. Step 3: Cross multiply
    243,058.60x = 365,279.10 × 212,645.80
  4. Step 4: Simplify right side
    243,058.60x = 77,675,066,442.78
  5. Step 5: Solve for x
    x = 77,675,066,442.78/243,058.60
  6. Step 6: Final answer
    x = 319,573.41

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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.