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Finding the Fourth Proportional to 354,670.40, 532,005.60 and 221,700.80

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Solution

The fourth proportional to 354,670.40, 532,005.60 and 221,700.80 is: 332,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,670.40 : 532,005.60 = 221,700.80 : x
  2. Step 2: Convert to fraction form
    354,670.40/532,005.60 = 221,700.80/x
  3. Step 3: Cross multiply
    354,670.40x = 532,005.60 × 221,700.80
  4. Step 4: Simplify right side
    354,670.40x = 117,946,067,124.48
  5. Step 5: Solve for x
    x = 117,946,067,124.48/354,670.40
  6. Step 6: Final answer
    x = 332,551.20

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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.