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Finding the Fourth Proportional to 347,015.20, 519,745.20 and 284,807.20

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Solution

The fourth proportional to 347,015.20, 519,745.20 and 284,807.20 is: 426,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,015.20 : 519,745.20 = 284,807.20 : x
  2. Step 2: Convert to fraction form
    347,015.20/519,745.20 = 284,807.20/x
  3. Step 3: Cross multiply
    347,015.20x = 519,745.20 × 284,807.20
  4. Step 4: Simplify right side
    347,015.20x = 148,027,175,125.44
  5. Step 5: Solve for x
    x = 148,027,175,125.44/347,015.20
  6. Step 6: Final answer
    x = 426,572.60

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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.