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Finding the Fourth Proportional to 253,028.66, 348,953.40 and 209,939.94

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Solution

The fourth proportional to 253,028.66, 348,953.40 and 209,939.94 is: 289,529.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,028.66 : 348,953.40 = 209,939.94 : x
  2. Step 2: Convert to fraction form
    253,028.66/348,953.40 = 209,939.94/x
  3. Step 3: Cross multiply
    253,028.66x = 348,953.40 × 209,939.94
  4. Step 4: Simplify right side
    253,028.66x = 73,259,256,253.76
  5. Step 5: Solve for x
    x = 73,259,256,253.76/253,028.66
  6. Step 6: Final answer
    x = 289,529.48

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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.