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Finding the Fourth Proportional to 354,660.30, 531,990.45 and 344,818.80

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Solution

The fourth proportional to 354,660.30, 531,990.45 and 344,818.80 is: 517,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,660.30 : 531,990.45 = 344,818.80 : x
  2. Step 2: Convert to fraction form
    354,660.30/531,990.45 = 344,818.80/x
  3. Step 3: Cross multiply
    354,660.30x = 531,990.45 × 344,818.80
  4. Step 4: Simplify right side
    354,660.30x = 183,440,308,580.46
  5. Step 5: Solve for x
    x = 183,440,308,580.46/354,660.30
  6. Step 6: Final answer
    x = 517,228.20

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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.