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Finding the Fourth Proportional to 243,359.40, 364,974.30 and 74,879.40

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Solution

The fourth proportional to 243,359.40, 364,974.30 and 74,879.40 is: 112,299.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,359.40 : 364,974.30 = 74,879.40 : x
  2. Step 2: Convert to fraction form
    243,359.40/364,974.30 = 74,879.40/x
  3. Step 3: Cross multiply
    243,359.40x = 364,974.30 × 74,879.40
  4. Step 4: Simplify right side
    243,359.40x = 27,329,056,599.42
  5. Step 5: Solve for x
    x = 27,329,056,599.42/243,359.40
  6. Step 6: Final answer
    x = 112,299.16

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1.5x scale

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.