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Finding the Fourth Proportional to 354,490.17, 531,672.12 and 141,240.21

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Solution

The fourth proportional to 354,490.17, 531,672.12 and 141,240.21 is: 211,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,490.17 : 531,672.12 = 141,240.21 : x
  2. Step 2: Convert to fraction form
    354,490.17/531,672.12 = 141,240.21/x
  3. Step 3: Cross multiply
    354,490.17x = 531,672.12 × 141,240.21
  4. Step 4: Simplify right side
    354,490.17x = 75,093,481,879.95
  5. Step 5: Solve for x
    x = 75,093,481,879.95/354,490.17
  6. Step 6: Final answer
    x = 211,835.16

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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.