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Finding the Fourth Proportional to 347,653.20, 521,868.60 and 324,811.20

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Solution

The fourth proportional to 347,653.20, 521,868.60 and 324,811.20 is: 487,580.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,653.20 : 521,868.60 = 324,811.20 : x
  2. Step 2: Convert to fraction form
    347,653.20/521,868.60 = 324,811.20/x
  3. Step 3: Cross multiply
    347,653.20x = 521,868.60 × 324,811.20
  4. Step 4: Simplify right side
    347,653.20x = 169,508,766,208.32
  5. Step 5: Solve for x
    x = 169,508,766,208.32/347,653.20
  6. Step 6: Final answer
    x = 487,580.05

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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.