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Finding the Fourth Proportional to 157,619.20, 236,450.40 and 52,427.20

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Solution

The fourth proportional to 157,619.20, 236,450.40 and 52,427.20 is: 78,647.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,619.20 : 236,450.40 = 52,427.20 : x
  2. Step 2: Convert to fraction form
    157,619.20/236,450.40 = 52,427.20/x
  3. Step 3: Cross multiply
    157,619.20x = 236,450.40 × 52,427.20
  4. Step 4: Simplify right side
    157,619.20x = 12,396,432,410.88
  5. Step 5: Solve for x
    x = 12,396,432,410.88/157,619.20
  6. Step 6: Final answer
    x = 78,647.98

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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.