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Finding the Fourth Proportional to 512,565.90, 768,848.85 and 133,485.90

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Solution

The fourth proportional to 512,565.90, 768,848.85 and 133,485.90 is: 200,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,565.90 : 768,848.85 = 133,485.90 : x
  2. Step 2: Convert to fraction form
    512,565.90/768,848.85 = 133,485.90/x
  3. Step 3: Cross multiply
    512,565.90x = 768,848.85 × 133,485.90
  4. Step 4: Simplify right side
    512,565.90x = 102,630,480,706.22
  5. Step 5: Solve for x
    x = 102,630,480,706.22/512,565.90
  6. Step 6: Final answer
    x = 200,228.85

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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.