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Finding the Fourth Proportional to 279,034.60, 385,068.58 and 151,710.68

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Solution

The fourth proportional to 279,034.60, 385,068.58 and 151,710.68 is: 209,361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,034.60 : 385,068.58 = 151,710.68 : x
  2. Step 2: Convert to fraction form
    279,034.60/385,068.58 = 151,710.68/x
  3. Step 3: Cross multiply
    279,034.60x = 385,068.58 × 151,710.68
  4. Step 4: Simplify right side
    279,034.60x = 58,419,016,118.43
  5. Step 5: Solve for x
    x = 58,419,016,118.43/279,034.60
  6. Step 6: Final answer
    x = 209,361.19

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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.