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Finding the Fourth Proportional to 353,220.80, 529,053.60 and 313,822.40

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Solution

The fourth proportional to 353,220.80, 529,053.60 and 313,822.40 is: 470,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,220.80 : 529,053.60 = 313,822.40 : x
  2. Step 2: Convert to fraction form
    353,220.80/529,053.60 = 313,822.40/x
  3. Step 3: Cross multiply
    353,220.80x = 529,053.60 × 313,822.40
  4. Step 4: Simplify right side
    353,220.80x = 166,028,870,480.64
  5. Step 5: Solve for x
    x = 166,028,870,480.64/353,220.80
  6. Step 6: Final answer
    x = 470,042.73

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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.