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Finding the Fourth Proportional to 311,421.60, 467,132.40 and 101,080.80

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Solution

The fourth proportional to 311,421.60, 467,132.40 and 101,080.80 is: 151,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,421.60 : 467,132.40 = 101,080.80 : x
  2. Step 2: Convert to fraction form
    311,421.60/467,132.40 = 101,080.80/x
  3. Step 3: Cross multiply
    311,421.60x = 467,132.40 × 101,080.80
  4. Step 4: Simplify right side
    311,421.60x = 47,218,116,697.92
  5. Step 5: Solve for x
    x = 47,218,116,697.92/311,421.60
  6. Step 6: Final answer
    x = 151,621.20

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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.