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Finding the Fourth Proportional to 345,879.20, 518,530.80 and 146,352.80

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Solution

The fourth proportional to 345,879.20, 518,530.80 and 146,352.80 is: 219,407.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,879.20 : 518,530.80 = 146,352.80 : x
  2. Step 2: Convert to fraction form
    345,879.20/518,530.80 = 146,352.80/x
  3. Step 3: Cross multiply
    345,879.20x = 518,530.80 × 146,352.80
  4. Step 4: Simplify right side
    345,879.20x = 75,888,434,466.24
  5. Step 5: Solve for x
    x = 75,888,434,466.24/345,879.20
  6. Step 6: Final answer
    x = 219,407.34

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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.