Home / 389,287.92-537,217.38-219,522.09

Finding the Fourth Proportional to 389,287.92, 537,217.38 and 219,522.09

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Solution

The fourth proportional to 389,287.92, 537,217.38 and 219,522.09 is: 302,940.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,287.92 : 537,217.38 = 219,522.09 : x
  2. Step 2: Convert to fraction form
    389,287.92/537,217.38 = 219,522.09/x
  3. Step 3: Cross multiply
    389,287.92x = 537,217.38 × 219,522.09
  4. Step 4: Simplify right side
    389,287.92x = 117,931,082,041.92
  5. Step 5: Solve for x
    x = 117,931,082,041.92/389,287.92
  6. Step 6: Final answer
    x = 302,940.51

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1.5x scale

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.