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Finding the Fourth Proportional to 283,611.20, 425,416.80 and 115,212.20

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Solution

The fourth proportional to 283,611.20, 425,416.80 and 115,212.20 is: 172,818.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,611.20 : 425,416.80 = 115,212.20 : x
  2. Step 2: Convert to fraction form
    283,611.20/425,416.80 = 115,212.20/x
  3. Step 3: Cross multiply
    283,611.20x = 425,416.80 × 115,212.20
  4. Step 4: Simplify right side
    283,611.20x = 49,013,205,444.96
  5. Step 5: Solve for x
    x = 49,013,205,444.96/283,611.20
  6. Step 6: Final answer
    x = 172,818.30

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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.