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Finding the Fourth Proportional to 354,437.20, 531,502.20 and 144,005.20

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Solution

The fourth proportional to 354,437.20, 531,502.20 and 144,005.20 is: 215,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,437.20 : 531,502.20 = 144,005.20 : x
  2. Step 2: Convert to fraction form
    354,437.20/531,502.20 = 144,005.20/x
  3. Step 3: Cross multiply
    354,437.20x = 531,502.20 × 144,005.20
  4. Step 4: Simplify right side
    354,437.20x = 76,539,080,611.44
  5. Step 5: Solve for x
    x = 76,539,080,611.44/354,437.20
  6. Step 6: Final answer
    x = 215,945.39

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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.