Home / 205,321.20-307,981.80-167,996.40

Finding the Fourth Proportional to 205,321.20, 307,981.80 and 167,996.40

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Solution

The fourth proportional to 205,321.20, 307,981.80 and 167,996.40 is: 251,994.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,321.20 : 307,981.80 = 167,996.40 : x
  2. Step 2: Convert to fraction form
    205,321.20/307,981.80 = 167,996.40/x
  3. Step 3: Cross multiply
    205,321.20x = 307,981.80 × 167,996.40
  4. Step 4: Simplify right side
    205,321.20x = 51,739,833,665.52
  5. Step 5: Solve for x
    x = 51,739,833,665.52/205,321.20
  6. Step 6: Final answer
    x = 251,994.60

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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.