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Finding the Fourth Proportional to 512,525.40, 768,788.10 and 228,215.40

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Solution

The fourth proportional to 512,525.40, 768,788.10 and 228,215.40 is: 342,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,525.40 : 768,788.10 = 228,215.40 : x
  2. Step 2: Convert to fraction form
    512,525.40/768,788.10 = 228,215.40/x
  3. Step 3: Cross multiply
    512,525.40x = 768,788.10 × 228,215.40
  4. Step 4: Simplify right side
    512,525.40x = 175,449,283,756.74
  5. Step 5: Solve for x
    x = 175,449,283,756.74/512,525.40
  6. Step 6: Final answer
    x = 342,323.10

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Similar ratio
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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.