Home / 328,823.20-493,234.80-142,199.20

Finding the Fourth Proportional to 328,823.20, 493,234.80 and 142,199.20

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Solution

The fourth proportional to 328,823.20, 493,234.80 and 142,199.20 is: 213,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,823.20 : 493,234.80 = 142,199.20 : x
  2. Step 2: Convert to fraction form
    328,823.20/493,234.80 = 142,199.20/x
  3. Step 3: Cross multiply
    328,823.20x = 493,234.80 × 142,199.20
  4. Step 4: Simplify right side
    328,823.20x = 70,137,593,972.16
  5. Step 5: Solve for x
    x = 70,137,593,972.16/328,823.20
  6. Step 6: Final answer
    x = 213,298.80

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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.