Home / 378,914.50-522,902.06-209,148.67

Finding the Fourth Proportional to 378,914.50, 522,902.06 and 209,148.67

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Solution

The fourth proportional to 378,914.50, 522,902.06 and 209,148.67 is: 288,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,914.50 : 522,902.06 = 209,148.67 : x
  2. Step 2: Convert to fraction form
    378,914.50/522,902.06 = 209,148.67/x
  3. Step 3: Cross multiply
    378,914.50x = 522,902.06 × 209,148.67
  4. Step 4: Simplify right side
    378,914.50x = 109,364,270,389.26
  5. Step 5: Solve for x
    x = 109,364,270,389.26/378,914.50
  6. Step 6: Final answer
    x = 288,625.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.