Home / 431,315.60-646,858.20-131,795.60

Finding the Fourth Proportional to 431,315.60, 646,858.20 and 131,795.60

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Solution

The fourth proportional to 431,315.60, 646,858.20 and 131,795.60 is: 197,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,315.60 : 646,858.20 = 131,795.60 : x
  2. Step 2: Convert to fraction form
    431,315.60/646,858.20 = 131,795.60/x
  3. Step 3: Cross multiply
    431,315.60x = 646,858.20 × 131,795.60
  4. Step 4: Simplify right side
    431,315.60x = 85,253,064,583.92
  5. Step 5: Solve for x
    x = 85,253,064,583.92/431,315.60
  6. Step 6: Final answer
    x = 197,658.20

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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.