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Finding the Fourth Proportional to 369,046.90, 553,570.35 and 279,817.30

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Solution

The fourth proportional to 369,046.90, 553,570.35 and 279,817.30 is: 419,725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,046.90 : 553,570.35 = 279,817.30 : x
  2. Step 2: Convert to fraction form
    369,046.90/553,570.35 = 279,817.30/x
  3. Step 3: Cross multiply
    369,046.90x = 553,570.35 × 279,817.30
  4. Step 4: Simplify right side
    369,046.90x = 154,898,560,697.06
  5. Step 5: Solve for x
    x = 154,898,560,697.06/369,046.90
  6. Step 6: Final answer
    x = 419,725.95

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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.