Home / 509,135.40-763,705.20-172,177.80

Finding the Fourth Proportional to 509,135.40, 763,705.20 and 172,177.80

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Solution

The fourth proportional to 509,135.40, 763,705.20 and 172,177.80 is: 258,267.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,135.40 : 763,705.20 = 172,177.80 : x
  2. Step 2: Convert to fraction form
    509,135.40/763,705.20 = 172,177.80/x
  3. Step 3: Cross multiply
    509,135.40x = 763,705.20 × 172,177.80
  4. Step 4: Simplify right side
    509,135.40x = 131,493,081,184.56
  5. Step 5: Solve for x
    x = 131,493,081,184.56/509,135.40
  6. Step 6: Final answer
    x = 258,267.41

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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.