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Finding the Fourth Proportional to 251,995.36, 377,991.92 and 172,869.28

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Solution

The fourth proportional to 251,995.36, 377,991.92 and 172,869.28 is: 259,303.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,995.36 : 377,991.92 = 172,869.28 : x
  2. Step 2: Convert to fraction form
    251,995.36/377,991.92 = 172,869.28/x
  3. Step 3: Cross multiply
    251,995.36x = 377,991.92 × 172,869.28
  4. Step 4: Simplify right side
    251,995.36x = 65,343,191,056.22
  5. Step 5: Solve for x
    x = 65,343,191,056.22/251,995.36
  6. Step 6: Final answer
    x = 259,303.15

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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.