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Finding the Fourth Proportional to 279,592.65, 385,848.78 and 158,745.18

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Solution

The fourth proportional to 279,592.65, 385,848.78 and 158,745.18 is: 219,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,592.65 : 385,848.78 = 158,745.18 : x
  2. Step 2: Convert to fraction form
    279,592.65/385,848.78 = 158,745.18/x
  3. Step 3: Cross multiply
    279,592.65x = 385,848.78 × 158,745.18
  4. Step 4: Simplify right side
    279,592.65x = 61,251,634,033.88
  5. Step 5: Solve for x
    x = 61,251,634,033.88/279,592.65
  6. Step 6: Final answer
    x = 219,074.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.