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Finding the Fourth Proportional to 212,937.60, 319,291.20 and 88,291.20

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Solution

The fourth proportional to 212,937.60, 319,291.20 and 88,291.20 is: 132,389.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,937.60 : 319,291.20 = 88,291.20 : x
  2. Step 2: Convert to fraction form
    212,937.60/319,291.20 = 88,291.20/x
  3. Step 3: Cross multiply
    212,937.60x = 319,291.20 × 88,291.20
  4. Step 4: Simplify right side
    212,937.60x = 28,190,603,197.44
  5. Step 5: Solve for x
    x = 28,190,603,197.44/212,937.60
  6. Step 6: Final answer
    x = 132,389.03

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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.