Home / 345,712.04-518,215.24-219,445.60

Finding the Fourth Proportional to 345,712.04, 518,215.24 and 219,445.60

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Solution

The fourth proportional to 345,712.04, 518,215.24 and 219,445.60 is: 328,944.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,712.04 : 518,215.24 = 219,445.60 : x
  2. Step 2: Convert to fraction form
    345,712.04/518,215.24 = 219,445.60/x
  3. Step 3: Cross multiply
    345,712.04x = 518,215.24 × 219,445.60
  4. Step 4: Simplify right side
    345,712.04x = 113,720,054,270.94
  5. Step 5: Solve for x
    x = 113,720,054,270.94/345,712.04
  6. Step 6: Final answer
    x = 328,944.44

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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.