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Finding the Fourth Proportional to 291,644.22, 402,521.22 and 170,778.45

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Solution

The fourth proportional to 291,644.22, 402,521.22 and 170,778.45 is: 235,704.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,644.22 : 402,521.22 = 170,778.45 : x
  2. Step 2: Convert to fraction form
    291,644.22/402,521.22 = 170,778.45/x
  3. Step 3: Cross multiply
    291,644.22x = 402,521.22 × 170,778.45
  4. Step 4: Simplify right side
    291,644.22x = 68,741,950,043.71
  5. Step 5: Solve for x
    x = 68,741,950,043.71/291,644.22
  6. Step 6: Final answer
    x = 235,704.83

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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.