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Finding the Fourth Proportional to 636,393.90, 954,340.66 and 231,490

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Solution

The fourth proportional to 636,393.90, 954,340.66 and 231,490 is: 347,143.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,393.90 : 954,340.66 = 231,490 : x
  2. Step 2: Convert to fraction form
    636,393.90/954,340.66 = 231,490/x
  3. Step 3: Cross multiply
    636,393.90x = 954,340.66 × 231,490
  4. Step 4: Simplify right side
    636,393.90x = 220,920,319,383.40
  5. Step 5: Solve for x
    x = 220,920,319,383.40/636,393.90
  6. Step 6: Final answer
    x = 347,143.99

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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.