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Finding the Fourth Proportional to 319,616.10, 479,096.10 and 186,427.80

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Solution

The fourth proportional to 319,616.10, 479,096.10 and 186,427.80 is: 279,450.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,616.10 : 479,096.10 = 186,427.80 : x
  2. Step 2: Convert to fraction form
    319,616.10/479,096.10 = 186,427.80/x
  3. Step 3: Cross multiply
    319,616.10x = 479,096.10 × 186,427.80
  4. Step 4: Simplify right side
    319,616.10x = 89,316,831,911.58
  5. Step 5: Solve for x
    x = 89,316,831,911.58/319,616.10
  6. Step 6: Final answer
    x = 279,450.35

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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.