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Finding the Fourth Proportional to 291,644.60, 402,521.76 and 170,778.83

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Solution

The fourth proportional to 291,644.60, 402,521.76 and 170,778.83 is: 235,705.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,644.60 : 402,521.76 = 170,778.83 : x
  2. Step 2: Convert to fraction form
    291,644.60/402,521.76 = 170,778.83/x
  3. Step 3: Cross multiply
    291,644.60x = 402,521.76 × 170,778.83
  4. Step 4: Simplify right side
    291,644.60x = 68,742,193,209.73
  5. Step 5: Solve for x
    x = 68,742,193,209.73/291,644.60
  6. Step 6: Final answer
    x = 235,705.36

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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.