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Finding the Fourth Proportional to 354,488.64, 531,396.60 and 141,387.52

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Solution

The fourth proportional to 354,488.64, 531,396.60 and 141,387.52 is: 211,947.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,488.64 : 531,396.60 = 141,387.52 : x
  2. Step 2: Convert to fraction form
    354,488.64/531,396.60 = 141,387.52/x
  3. Step 3: Cross multiply
    354,488.64x = 531,396.60 × 141,387.52
  4. Step 4: Simplify right side
    354,488.64x = 75,132,847,410.43
  5. Step 5: Solve for x
    x = 75,132,847,410.43/354,488.64
  6. Step 6: Final answer
    x = 211,947.12

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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.