Home / 287,738.60-431,607.90-228,252.20

Finding the Fourth Proportional to 287,738.60, 431,607.90 and 228,252.20

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Solution

The fourth proportional to 287,738.60, 431,607.90 and 228,252.20 is: 342,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,738.60 : 431,607.90 = 228,252.20 : x
  2. Step 2: Convert to fraction form
    287,738.60/431,607.90 = 228,252.20/x
  3. Step 3: Cross multiply
    287,738.60x = 431,607.90 × 228,252.20
  4. Step 4: Simplify right side
    287,738.60x = 98,515,452,712.38
  5. Step 5: Solve for x
    x = 98,515,452,712.38/287,738.60
  6. Step 6: Final answer
    x = 342,378.30

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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.