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Finding the Fourth Proportional to 313,272.60, 469,908.90 and 155,808.60

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Solution

The fourth proportional to 313,272.60, 469,908.90 and 155,808.60 is: 233,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,272.60 : 469,908.90 = 155,808.60 : x
  2. Step 2: Convert to fraction form
    313,272.60/469,908.90 = 155,808.60/x
  3. Step 3: Cross multiply
    313,272.60x = 469,908.90 × 155,808.60
  4. Step 4: Simplify right side
    313,272.60x = 73,215,847,836.54
  5. Step 5: Solve for x
    x = 73,215,847,836.54/313,272.60
  6. Step 6: Final answer
    x = 233,712.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.