Home / 309,985.20-464,977.80-141,505.20

Finding the Fourth Proportional to 309,985.20, 464,977.80 and 141,505.20

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Solution

The fourth proportional to 309,985.20, 464,977.80 and 141,505.20 is: 212,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,985.20 : 464,977.80 = 141,505.20 : x
  2. Step 2: Convert to fraction form
    309,985.20/464,977.80 = 141,505.20/x
  3. Step 3: Cross multiply
    309,985.20x = 464,977.80 × 141,505.20
  4. Step 4: Simplify right side
    309,985.20x = 65,796,776,584.56
  5. Step 5: Solve for x
    x = 65,796,776,584.56/309,985.20
  6. Step 6: Final answer
    x = 212,257.80

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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.