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Finding the Fourth Proportional to 301,205.40, 451,872.90 and 90,864.60

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Solution

The fourth proportional to 301,205.40, 451,872.90 and 90,864.60 is: 136,316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,205.40 : 451,872.90 = 90,864.60 : x
  2. Step 2: Convert to fraction form
    301,205.40/451,872.90 = 90,864.60/x
  3. Step 3: Cross multiply
    301,205.40x = 451,872.90 × 90,864.60
  4. Step 4: Simplify right side
    301,205.40x = 41,059,250,309.34
  5. Step 5: Solve for x
    x = 41,059,250,309.34/301,205.40
  6. Step 6: Final answer
    x = 136,316.45

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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.