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Finding the Fourth Proportional to 345,480.84, 518,290.92 and 145,801.44

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Solution

The fourth proportional to 345,480.84, 518,290.92 and 145,801.44 is: 218,731.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,480.84 : 518,290.92 = 145,801.44 : x
  2. Step 2: Convert to fraction form
    345,480.84/518,290.92 = 145,801.44/x
  3. Step 3: Cross multiply
    345,480.84x = 518,290.92 × 145,801.44
  4. Step 4: Simplify right side
    345,480.84x = 75,567,562,474.92
  5. Step 5: Solve for x
    x = 75,567,562,474.92/345,480.84
  6. Step 6: Final answer
    x = 218,731.56

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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.