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Finding the Fourth Proportional to 340,086.40, 510,129.60 and 322,979.20

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Solution

The fourth proportional to 340,086.40, 510,129.60 and 322,979.20 is: 484,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,086.40 : 510,129.60 = 322,979.20 : x
  2. Step 2: Convert to fraction form
    340,086.40/510,129.60 = 322,979.20/x
  3. Step 3: Cross multiply
    340,086.40x = 510,129.60 × 322,979.20
  4. Step 4: Simplify right side
    340,086.40x = 164,761,250,104.32
  5. Step 5: Solve for x
    x = 164,761,250,104.32/340,086.40
  6. Step 6: Final answer
    x = 484,468.80

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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.