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Finding the Fourth Proportional to 279,683.78, 385,964.28 and 152,356.64

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Solution

The fourth proportional to 279,683.78, 385,964.28 and 152,356.64 is: 210,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,683.78 : 385,964.28 = 152,356.64 : x
  2. Step 2: Convert to fraction form
    279,683.78/385,964.28 = 152,356.64/x
  3. Step 3: Cross multiply
    279,683.78x = 385,964.28 × 152,356.64
  4. Step 4: Simplify right side
    279,683.78x = 58,804,220,099.04
  5. Step 5: Solve for x
    x = 58,804,220,099.04/279,683.78
  6. Step 6: Final answer
    x = 210,252.52

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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.