Home / 287,556.20-431,334.30-203,575.40

Finding the Fourth Proportional to 287,556.20, 431,334.30 and 203,575.40

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Solution

The fourth proportional to 287,556.20, 431,334.30 and 203,575.40 is: 305,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,556.20 : 431,334.30 = 203,575.40 : x
  2. Step 2: Convert to fraction form
    287,556.20/431,334.30 = 203,575.40/x
  3. Step 3: Cross multiply
    287,556.20x = 431,334.30 × 203,575.40
  4. Step 4: Simplify right side
    287,556.20x = 87,809,052,656.22
  5. Step 5: Solve for x
    x = 87,809,052,656.22/287,556.20
  6. Step 6: Final answer
    x = 305,363.10

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1.5x scale

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.