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Finding the Fourth Proportional to 261,991.84, 393,035.28 and 149,798.56

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Solution

The fourth proportional to 261,991.84, 393,035.28 and 149,798.56 is: 224,725.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,991.84 : 393,035.28 = 149,798.56 : x
  2. Step 2: Convert to fraction form
    261,991.84/393,035.28 = 149,798.56/x
  3. Step 3: Cross multiply
    261,991.84x = 393,035.28 × 149,798.56
  4. Step 4: Simplify right side
    261,991.84x = 58,876,118,973.20
  5. Step 5: Solve for x
    x = 58,876,118,973.20/261,991.84
  6. Step 6: Final answer
    x = 224,725.01

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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.