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Finding the Fourth Proportional to 347,778.51, 479,939.34 and 202,580.58

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Solution

The fourth proportional to 347,778.51, 479,939.34 and 202,580.58 is: 279,564.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,778.51 : 479,939.34 = 202,580.58 : x
  2. Step 2: Convert to fraction form
    347,778.51/479,939.34 = 202,580.58/x
  3. Step 3: Cross multiply
    347,778.51x = 479,939.34 × 202,580.58
  4. Step 4: Simplify right side
    347,778.51x = 97,226,389,862.02
  5. Step 5: Solve for x
    x = 97,226,389,862.02/347,778.51
  6. Step 6: Final answer
    x = 279,564.11

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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.