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Finding the Fourth Proportional to 253,005.53, 379,508.34 and 103,316.31

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Solution

The fourth proportional to 253,005.53, 379,508.34 and 103,316.31 is: 154,974.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,005.53 : 379,508.34 = 103,316.31 : x
  2. Step 2: Convert to fraction form
    253,005.53/379,508.34 = 103,316.31/x
  3. Step 3: Cross multiply
    253,005.53x = 379,508.34 × 103,316.31
  4. Step 4: Simplify right side
    253,005.53x = 39,209,401,303.03
  5. Step 5: Solve for x
    x = 39,209,401,303.03/253,005.53
  6. Step 6: Final answer
    x = 154,974.49

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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.