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Finding the Fourth Proportional to 201,679, 278,317.02 and 112,253.08

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Solution

The fourth proportional to 201,679, 278,317.02 and 112,253.08 is: 154,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,679 : 278,317.02 = 112,253.08 : x
  2. Step 2: Convert to fraction form
    201,679/278,317.02 = 112,253.08/x
  3. Step 3: Cross multiply
    201,679x = 278,317.02 × 112,253.08
  4. Step 4: Simplify right side
    201,679x = 31,241,942,711.42
  5. Step 5: Solve for x
    x = 31,241,942,711.42/201,679
  6. Step 6: Final answer
    x = 154,909.25

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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.