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Finding the Fourth Proportional to 354,079.38, 531,202.08 and 140,859.36

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Solution

The fourth proportional to 354,079.38, 531,202.08 and 140,859.36 is: 211,322.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,079.38 : 531,202.08 = 140,859.36 : x
  2. Step 2: Convert to fraction form
    354,079.38/531,202.08 = 140,859.36/x
  3. Step 3: Cross multiply
    354,079.38x = 531,202.08 × 140,859.36
  4. Step 4: Simplify right side
    354,079.38x = 74,824,785,019.47
  5. Step 5: Solve for x
    x = 74,824,785,019.47/354,079.38
  6. Step 6: Final answer
    x = 211,322.06

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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.