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Finding the Fourth Proportional to 201,528.68, 278,110.88 and 110,890.40

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Solution

The fourth proportional to 201,528.68, 278,110.88 and 110,890.40 is: 153,029.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,528.68 : 278,110.88 = 110,890.40 : x
  2. Step 2: Convert to fraction form
    201,528.68/278,110.88 = 110,890.40/x
  3. Step 3: Cross multiply
    201,528.68x = 278,110.88 × 110,890.40
  4. Step 4: Simplify right side
    201,528.68x = 30,839,826,727.55
  5. Step 5: Solve for x
    x = 30,839,826,727.55/201,528.68
  6. Step 6: Final answer
    x = 153,029.47

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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.