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Finding the Fourth Proportional to 215,892.80, 323,320.80 and 174,420.80

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Solution

The fourth proportional to 215,892.80, 323,320.80 and 174,420.80 is: 261,212.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,892.80 : 323,320.80 = 174,420.80 : x
  2. Step 2: Convert to fraction form
    215,892.80/323,320.80 = 174,420.80/x
  3. Step 3: Cross multiply
    215,892.80x = 323,320.80 × 174,420.80
  4. Step 4: Simplify right side
    215,892.80x = 56,393,872,592.64
  5. Step 5: Solve for x
    x = 56,393,872,592.64/215,892.80
  6. Step 6: Final answer
    x = 261,212.38

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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.