Home / 318,069.60-438,977.52-205,220.64

Finding the Fourth Proportional to 318,069.60, 438,977.52 and 205,220.64

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Solution

The fourth proportional to 318,069.60, 438,977.52 and 205,220.64 is: 283,231.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,069.60 : 438,977.52 = 205,220.64 : x
  2. Step 2: Convert to fraction form
    318,069.60/438,977.52 = 205,220.64/x
  3. Step 3: Cross multiply
    318,069.60x = 438,977.52 × 205,220.64
  4. Step 4: Simplify right side
    318,069.60x = 90,087,247,600.01
  5. Step 5: Solve for x
    x = 90,087,247,600.01/318,069.60
  6. Step 6: Final answer
    x = 283,231.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.