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Finding the Fourth Proportional to 369,752.78, 553,169.87 and 280,053.88

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Solution

The fourth proportional to 369,752.78, 553,169.87 and 280,053.88 is: 418,975.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,752.78 : 553,169.87 = 280,053.88 : x
  2. Step 2: Convert to fraction form
    369,752.78/553,169.87 = 280,053.88/x
  3. Step 3: Cross multiply
    369,752.78x = 553,169.87 × 280,053.88
  4. Step 4: Simplify right side
    369,752.78x = 154,917,371,167.12
  5. Step 5: Solve for x
    x = 154,917,371,167.12/369,752.78
  6. Step 6: Final answer
    x = 418,975.54

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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.