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Finding the Fourth Proportional to 282,359.38, 389,662.24 and 155,035.48

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Solution

The fourth proportional to 282,359.38, 389,662.24 and 155,035.48 is: 213,952.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,359.38 : 389,662.24 = 155,035.48 : x
  2. Step 2: Convert to fraction form
    282,359.38/389,662.24 = 155,035.48/x
  3. Step 3: Cross multiply
    282,359.38x = 389,662.24 × 155,035.48
  4. Step 4: Simplify right side
    282,359.38x = 60,411,472,416.28
  5. Step 5: Solve for x
    x = 60,411,472,416.28/282,359.38
  6. Step 6: Final answer
    x = 213,952.42

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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.