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Finding the Fourth Proportional to 369,713.60, 554,568.60 and 144,915.20

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Solution

The fourth proportional to 369,713.60, 554,568.60 and 144,915.20 is: 217,372.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,713.60 : 554,568.60 = 144,915.20 : x
  2. Step 2: Convert to fraction form
    369,713.60/554,568.60 = 144,915.20/x
  3. Step 3: Cross multiply
    369,713.60x = 554,568.60 × 144,915.20
  4. Step 4: Simplify right side
    369,713.60x = 80,365,419,582.72
  5. Step 5: Solve for x
    x = 80,365,419,582.72/369,713.60
  6. Step 6: Final answer
    x = 217,372.09

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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.