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Finding the Fourth Proportional to 378,314.32, 567,483.36 and 141,611.80

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Solution

The fourth proportional to 378,314.32, 567,483.36 and 141,611.80 is: 212,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,314.32 : 567,483.36 = 141,611.80 : x
  2. Step 2: Convert to fraction form
    378,314.32/567,483.36 = 141,611.80/x
  3. Step 3: Cross multiply
    378,314.32x = 567,483.36 × 141,611.80
  4. Step 4: Simplify right side
    378,314.32x = 80,362,340,079.65
  5. Step 5: Solve for x
    x = 80,362,340,079.65/378,314.32
  6. Step 6: Final answer
    x = 212,422.15

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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.