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Finding the Fourth Proportional to 291,456.36, 402,226.92 and 178,300.80

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Solution

The fourth proportional to 291,456.36, 402,226.92 and 178,300.80 is: 246,065.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,456.36 : 402,226.92 = 178,300.80 : x
  2. Step 2: Convert to fraction form
    291,456.36/402,226.92 = 178,300.80/x
  3. Step 3: Cross multiply
    291,456.36x = 402,226.92 × 178,300.80
  4. Step 4: Simplify right side
    291,456.36x = 71,717,381,617.54
  5. Step 5: Solve for x
    x = 71,717,381,617.54/291,456.36
  6. Step 6: Final answer
    x = 246,065.59

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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.