Home / 338,621.20-508,147.80-161,328.40

Finding the Fourth Proportional to 338,621.20, 508,147.80 and 161,328.40

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Solution

The fourth proportional to 338,621.20, 508,147.80 and 161,328.40 is: 242,095.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,621.20 : 508,147.80 = 161,328.40 : x
  2. Step 2: Convert to fraction form
    338,621.20/508,147.80 = 161,328.40/x
  3. Step 3: Cross multiply
    338,621.20x = 508,147.80 × 161,328.40
  4. Step 4: Simplify right side
    338,621.20x = 81,978,671,537.52
  5. Step 5: Solve for x
    x = 81,978,671,537.52/338,621.20
  6. Step 6: Final answer
    x = 242,095.51

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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.