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Finding the Fourth Proportional to 213,148.58, 319,772.88 and 63,390.11

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Solution

The fourth proportional to 213,148.58, 319,772.88 and 63,390.11 is: 95,100.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,148.58 : 319,772.88 = 63,390.11 : x
  2. Step 2: Convert to fraction form
    213,148.58/319,772.88 = 63,390.11/x
  3. Step 3: Cross multiply
    213,148.58x = 319,772.88 × 63,390.11
  4. Step 4: Simplify right side
    213,148.58x = 20,270,436,439.35
  5. Step 5: Solve for x
    x = 20,270,436,439.35/213,148.58
  6. Step 6: Final answer
    x = 95,100.03

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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.