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Finding the Fourth Proportional to 512,225.20, 768,337.80 and 245,848.60

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Solution

The fourth proportional to 512,225.20, 768,337.80 and 245,848.60 is: 368,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,225.20 : 768,337.80 = 245,848.60 : x
  2. Step 2: Convert to fraction form
    512,225.20/768,337.80 = 245,848.60/x
  3. Step 3: Cross multiply
    512,225.20x = 768,337.80 × 245,848.60
  4. Step 4: Simplify right side
    512,225.20x = 188,894,772,457.08
  5. Step 5: Solve for x
    x = 188,894,772,457.08/512,225.20
  6. Step 6: Final answer
    x = 368,772.90

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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.