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Finding the Fourth Proportional to 343,270.80, 514,906.20 and 319,942.80

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Solution

The fourth proportional to 343,270.80, 514,906.20 and 319,942.80 is: 479,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,270.80 : 514,906.20 = 319,942.80 : x
  2. Step 2: Convert to fraction form
    343,270.80/514,906.20 = 319,942.80/x
  3. Step 3: Cross multiply
    343,270.80x = 514,906.20 × 319,942.80
  4. Step 4: Simplify right side
    343,270.80x = 164,740,531,365.36
  5. Step 5: Solve for x
    x = 164,740,531,365.36/343,270.80
  6. Step 6: Final answer
    x = 479,914.20

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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.