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Finding the Fourth Proportional to 347,642.43, 479,963.33 and 266,909.33

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Solution

The fourth proportional to 347,642.43, 479,963.33 and 266,909.33 is: 368,501.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,642.43 : 479,963.33 = 266,909.33 : x
  2. Step 2: Convert to fraction form
    347,642.43/479,963.33 = 266,909.33/x
  3. Step 3: Cross multiply
    347,642.43x = 479,963.33 × 266,909.33
  4. Step 4: Simplify right side
    347,642.43x = 128,106,687,100.51
  5. Step 5: Solve for x
    x = 128,106,687,100.51/347,642.43
  6. Step 6: Final answer
    x = 368,501.30

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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.