Home / 351,769.40-528,042.90-218,799.80

Finding the Fourth Proportional to 351,769.40, 528,042.90 and 218,799.80

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Solution

The fourth proportional to 351,769.40, 528,042.90 and 218,799.80 is: 328,441.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,769.40 : 528,042.90 = 218,799.80 : x
  2. Step 2: Convert to fraction form
    351,769.40/528,042.90 = 218,799.80/x
  3. Step 3: Cross multiply
    351,769.40x = 528,042.90 × 218,799.80
  4. Step 4: Simplify right side
    351,769.40x = 115,535,680,911.42
  5. Step 5: Solve for x
    x = 115,535,680,911.42/351,769.40
  6. Step 6: Final answer
    x = 328,441.53

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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.