Home / 389,766.12-538,248.68-368,538.45

Finding the Fourth Proportional to 389,766.12, 538,248.68 and 368,538.45

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Solution

The fourth proportional to 389,766.12, 538,248.68 and 368,538.45 is: 508,934.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,766.12 : 538,248.68 = 368,538.45 : x
  2. Step 2: Convert to fraction form
    389,766.12/538,248.68 = 368,538.45/x
  3. Step 3: Cross multiply
    389,766.12x = 538,248.68 × 368,538.45
  4. Step 4: Simplify right side
    389,766.12x = 198,365,332,399.05
  5. Step 5: Solve for x
    x = 198,365,332,399.05/389,766.12
  6. Step 6: Final answer
    x = 508,934.26

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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.