Home / 353,121.20-529,487.40-142,521.20

Finding the Fourth Proportional to 353,121.20, 529,487.40 and 142,521.20

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Solution

The fourth proportional to 353,121.20, 529,487.40 and 142,521.20 is: 213,703.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,121.20 : 529,487.40 = 142,521.20 : x
  2. Step 2: Convert to fraction form
    353,121.20/529,487.40 = 142,521.20/x
  3. Step 3: Cross multiply
    353,121.20x = 529,487.40 × 142,521.20
  4. Step 4: Simplify right side
    353,121.20x = 75,463,179,632.88
  5. Step 5: Solve for x
    x = 75,463,179,632.88/353,121.20
  6. Step 6: Final answer
    x = 213,703.34

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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.