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Finding the Fourth Proportional to 300,838.96, 415,199.22 and 173,511.76

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Solution

The fourth proportional to 300,838.96, 415,199.22 and 173,511.76 is: 239,470.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,838.96 : 415,199.22 = 173,511.76 : x
  2. Step 2: Convert to fraction form
    300,838.96/415,199.22 = 173,511.76/x
  3. Step 3: Cross multiply
    300,838.96x = 415,199.22 × 173,511.76
  4. Step 4: Simplify right side
    300,838.96x = 72,041,947,412.83
  5. Step 5: Solve for x
    x = 72,041,947,412.83/300,838.96
  6. Step 6: Final answer
    x = 239,470.14

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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.