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Finding the Fourth Proportional to 260,143.90, 359,056.48 and 158,147.76

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Solution

The fourth proportional to 260,143.90, 359,056.48 and 158,147.76 is: 218,279.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,143.90 : 359,056.48 = 158,147.76 : x
  2. Step 2: Convert to fraction form
    260,143.90/359,056.48 = 158,147.76/x
  3. Step 3: Cross multiply
    260,143.90x = 359,056.48 × 158,147.76
  4. Step 4: Simplify right side
    260,143.90x = 56,783,978,025.48
  5. Step 5: Solve for x
    x = 56,783,978,025.48/260,143.90
  6. Step 6: Final answer
    x = 218,279.11

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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.