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Finding the Fourth Proportional to 355,014.80, 532,522.20 and 215,046.80

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Solution

The fourth proportional to 355,014.80, 532,522.20 and 215,046.80 is: 322,570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,014.80 : 532,522.20 = 215,046.80 : x
  2. Step 2: Convert to fraction form
    355,014.80/532,522.20 = 215,046.80/x
  3. Step 3: Cross multiply
    355,014.80x = 532,522.20 × 215,046.80
  4. Step 4: Simplify right side
    355,014.80x = 114,517,195,038.96
  5. Step 5: Solve for x
    x = 114,517,195,038.96/355,014.80
  6. Step 6: Final answer
    x = 322,570.20

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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.