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Finding the Fourth Proportional to 512,434.40, 768,766.80 and 157,464.80

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Solution

The fourth proportional to 512,434.40, 768,766.80 and 157,464.80 is: 236,232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,434.40 : 768,766.80 = 157,464.80 : x
  2. Step 2: Convert to fraction form
    512,434.40/768,766.80 = 157,464.80/x
  3. Step 3: Cross multiply
    512,434.40x = 768,766.80 × 157,464.80
  4. Step 4: Simplify right side
    512,434.40x = 121,053,710,408.64
  5. Step 5: Solve for x
    x = 121,053,710,408.64/512,434.40
  6. Step 6: Final answer
    x = 236,232.60

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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.