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Finding the Fourth Proportional to 300,992.71, 415,386.90 and 178,557.57

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Solution

The fourth proportional to 300,992.71, 415,386.90 and 178,557.57 is: 246,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,992.71 : 415,386.90 = 178,557.57 : x
  2. Step 2: Convert to fraction form
    300,992.71/415,386.90 = 178,557.57/x
  3. Step 3: Cross multiply
    300,992.71x = 415,386.90 × 178,557.57
  4. Step 4: Simplify right side
    300,992.71x = 74,170,475,473.83
  5. Step 5: Solve for x
    x = 74,170,475,473.83/300,992.71
  6. Step 6: Final answer
    x = 246,419.51

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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.