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Finding the Fourth Proportional to 354,734.40, 532,127.20 and 214,190.40

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Solution

The fourth proportional to 354,734.40, 532,127.20 and 214,190.40 is: 321,301.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,734.40 : 532,127.20 = 214,190.40 : x
  2. Step 2: Convert to fraction form
    354,734.40/532,127.20 = 214,190.40/x
  3. Step 3: Cross multiply
    354,734.40x = 532,127.20 × 214,190.40
  4. Step 4: Simplify right side
    354,734.40x = 113,976,537,818.88
  5. Step 5: Solve for x
    x = 113,976,537,818.88/354,734.40
  6. Step 6: Final answer
    x = 321,301.06

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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.