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Finding the Fourth Proportional to 538,397.38, 743,017.61 and 308,952.77

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Solution

The fourth proportional to 538,397.38, 743,017.61 and 308,952.77 is: 426,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,397.38 : 743,017.61 = 308,952.77 : x
  2. Step 2: Convert to fraction form
    538,397.38/743,017.61 = 308,952.77/x
  3. Step 3: Cross multiply
    538,397.38x = 743,017.61 × 308,952.77
  4. Step 4: Simplify right side
    538,397.38x = 229,557,351,398.21
  5. Step 5: Solve for x
    x = 229,557,351,398.21/538,397.38
  6. Step 6: Final answer
    x = 426,371.60

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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.