Home / 213,621.80-320,432.70-194,268.20

Finding the Fourth Proportional to 213,621.80, 320,432.70 and 194,268.20

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Solution

The fourth proportional to 213,621.80, 320,432.70 and 194,268.20 is: 291,402.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,621.80 : 320,432.70 = 194,268.20 : x
  2. Step 2: Convert to fraction form
    213,621.80/320,432.70 = 194,268.20/x
  3. Step 3: Cross multiply
    213,621.80x = 320,432.70 × 194,268.20
  4. Step 4: Simplify right side
    213,621.80x = 62,249,883,850.14
  5. Step 5: Solve for x
    x = 62,249,883,850.14/213,621.80
  6. Step 6: Final answer
    x = 291,402.30

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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.