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Finding the Fourth Proportional to 354,705.40, 532,058.10 and 221,735.80

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Solution

The fourth proportional to 354,705.40, 532,058.10 and 221,735.80 is: 332,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,705.40 : 532,058.10 = 221,735.80 : x
  2. Step 2: Convert to fraction form
    354,705.40/532,058.10 = 221,735.80/x
  3. Step 3: Cross multiply
    354,705.40x = 532,058.10 × 221,735.80
  4. Step 4: Simplify right side
    354,705.40x = 117,976,328,449.98
  5. Step 5: Solve for x
    x = 117,976,328,449.98/354,705.40
  6. Step 6: Final answer
    x = 332,603.70

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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.