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Finding the Fourth Proportional to 301,223.80, 451,835.70 and 90,834.40

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Solution

The fourth proportional to 301,223.80, 451,835.70 and 90,834.40 is: 136,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,223.80 : 451,835.70 = 90,834.40 : x
  2. Step 2: Convert to fraction form
    301,223.80/451,835.70 = 90,834.40/x
  3. Step 3: Cross multiply
    301,223.80x = 451,835.70 × 90,834.40
  4. Step 4: Simplify right side
    301,223.80x = 41,042,224,708.08
  5. Step 5: Solve for x
    x = 41,042,224,708.08/301,223.80
  6. Step 6: Final answer
    x = 136,251.60

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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.