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Finding the Fourth Proportional to 310,820.03, 428,956.54 and 174,845.87

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Solution

The fourth proportional to 310,820.03, 428,956.54 and 174,845.87 is: 241,301.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,820.03 : 428,956.54 = 174,845.87 : x
  2. Step 2: Convert to fraction form
    310,820.03/428,956.54 = 174,845.87/x
  3. Step 3: Cross multiply
    310,820.03x = 428,956.54 × 174,845.87
  4. Step 4: Simplify right side
    310,820.03x = 75,001,279,428.49
  5. Step 5: Solve for x
    x = 75,001,279,428.49/310,820.03
  6. Step 6: Final answer
    x = 241,301.31

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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.