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Finding the Fourth Proportional to 352,928.80, 528,615.60 and 313,530.40

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Solution

The fourth proportional to 352,928.80, 528,615.60 and 313,530.40 is: 469,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,928.80 : 528,615.60 = 313,530.40 : x
  2. Step 2: Convert to fraction form
    352,928.80/528,615.60 = 313,530.40/x
  3. Step 3: Cross multiply
    352,928.80x = 528,615.60 × 313,530.40
  4. Step 4: Simplify right side
    352,928.80x = 165,737,060,514.24
  5. Step 5: Solve for x
    x = 165,737,060,514.24/352,928.80
  6. Step 6: Final answer
    x = 469,604.81

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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.