Home / 413,199.28-620,131.02-213,578.16

Finding the Fourth Proportional to 413,199.28, 620,131.02 and 213,578.16

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Solution

The fourth proportional to 413,199.28, 620,131.02 and 213,578.16 is: 320,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,199.28 : 620,131.02 = 213,578.16 : x
  2. Step 2: Convert to fraction form
    413,199.28/620,131.02 = 213,578.16/x
  3. Step 3: Cross multiply
    413,199.28x = 620,131.02 × 213,578.16
  4. Step 4: Simplify right side
    413,199.28x = 132,446,442,210.52
  5. Step 5: Solve for x
    x = 132,446,442,210.52/413,199.28
  6. Step 6: Final answer
    x = 320,538.90

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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.