Home / 378,205.02-521,913.93-206,128.41

Finding the Fourth Proportional to 378,205.02, 521,913.93 and 206,128.41

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Solution

The fourth proportional to 378,205.02, 521,913.93 and 206,128.41 is: 284,452.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,205.02 : 521,913.93 = 206,128.41 : x
  2. Step 2: Convert to fraction form
    378,205.02/521,913.93 = 206,128.41/x
  3. Step 3: Cross multiply
    378,205.02x = 521,913.93 × 206,128.41
  4. Step 4: Simplify right side
    378,205.02x = 107,581,288,547.75
  5. Step 5: Solve for x
    x = 107,581,288,547.75/378,205.02
  6. Step 6: Final answer
    x = 284,452.30

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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.