Home / 287,926.20-431,889.30-173,764.80

Finding the Fourth Proportional to 287,926.20, 431,889.30 and 173,764.80

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Solution

The fourth proportional to 287,926.20, 431,889.30 and 173,764.80 is: 260,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,926.20 : 431,889.30 = 173,764.80 : x
  2. Step 2: Convert to fraction form
    287,926.20/431,889.30 = 173,764.80/x
  3. Step 3: Cross multiply
    287,926.20x = 431,889.30 × 173,764.80
  4. Step 4: Simplify right side
    287,926.20x = 75,047,157,836.64
  5. Step 5: Solve for x
    x = 75,047,157,836.64/287,926.20
  6. Step 6: Final answer
    x = 260,647.20

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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.