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Finding the Fourth Proportional to 305,305.80, 458,001.90 and 94,921.80

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Solution

The fourth proportional to 305,305.80, 458,001.90 and 94,921.80 is: 142,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,305.80 : 458,001.90 = 94,921.80 : x
  2. Step 2: Convert to fraction form
    305,305.80/458,001.90 = 94,921.80/x
  3. Step 3: Cross multiply
    305,305.80x = 458,001.90 × 94,921.80
  4. Step 4: Simplify right side
    305,305.80x = 43,474,364,751.42
  5. Step 5: Solve for x
    x = 43,474,364,751.42/305,305.80
  6. Step 6: Final answer
    x = 142,396.13

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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.