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Finding the Fourth Proportional to 301,126.55, 451,711.69 and 90,780.89

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Solution

The fourth proportional to 301,126.55, 451,711.69 and 90,780.89 is: 136,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,126.55 : 451,711.69 = 90,780.89 : x
  2. Step 2: Convert to fraction form
    301,126.55/451,711.69 = 90,780.89/x
  3. Step 3: Cross multiply
    301,126.55x = 451,711.69 × 90,780.89
  4. Step 4: Simplify right side
    301,126.55x = 41,006,786,756.09
  5. Step 5: Solve for x
    x = 41,006,786,756.09/301,126.55
  6. Step 6: Final answer
    x = 136,177.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.