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Finding the Fourth Proportional to 201,636.76, 278,265.36 and 110,999.40

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Solution

The fourth proportional to 201,636.76, 278,265.36 and 110,999.40 is: 153,182.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,636.76 : 278,265.36 = 110,999.40 : x
  2. Step 2: Convert to fraction form
    201,636.76/278,265.36 = 110,999.40/x
  3. Step 3: Cross multiply
    201,636.76x = 278,265.36 × 110,999.40
  4. Step 4: Simplify right side
    201,636.76x = 30,887,288,000.78
  5. Step 5: Solve for x
    x = 30,887,288,000.78/201,636.76
  6. Step 6: Final answer
    x = 153,182.82

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1.5x scale

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.