Home / 353,121.80-528,905.10-313,723.40

Finding the Fourth Proportional to 353,121.80, 528,905.10 and 313,723.40

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Solution

The fourth proportional to 353,121.80, 528,905.10 and 313,723.40 is: 469,894.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,121.80 : 528,905.10 = 313,723.40 : x
  2. Step 2: Convert to fraction form
    353,121.80/528,905.10 = 313,723.40/x
  3. Step 3: Cross multiply
    353,121.80x = 528,905.10 × 313,723.40
  4. Step 4: Simplify right side
    353,121.80x = 165,929,906,249.34
  5. Step 5: Solve for x
    x = 165,929,906,249.34/353,121.80
  6. Step 6: Final answer
    x = 469,894.26

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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.