Home / 213,869.20-320,112.60-197,280.40

Finding the Fourth Proportional to 213,869.20, 320,112.60 and 197,280.40

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Solution

The fourth proportional to 213,869.20, 320,112.60 and 197,280.40 is: 295,283.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,869.20 : 320,112.60 = 197,280.40 : x
  2. Step 2: Convert to fraction form
    213,869.20/320,112.60 = 197,280.40/x
  3. Step 3: Cross multiply
    213,869.20x = 320,112.60 × 197,280.40
  4. Step 4: Simplify right side
    213,869.20x = 63,151,941,773.04
  5. Step 5: Solve for x
    x = 63,151,941,773.04/213,869.20
  6. Step 6: Final answer
    x = 295,283.01

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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.