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Finding the Fourth Proportional to 288,027.80, 431,285.70 and 203,330.60

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Solution

The fourth proportional to 288,027.80, 431,285.70 and 203,330.60 is: 304,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,027.80 : 431,285.70 = 203,330.60 : x
  2. Step 2: Convert to fraction form
    288,027.80/431,285.70 = 203,330.60/x
  3. Step 3: Cross multiply
    288,027.80x = 431,285.70 × 203,330.60
  4. Step 4: Simplify right side
    288,027.80x = 87,693,580,152.42
  5. Step 5: Solve for x
    x = 87,693,580,152.42/288,027.80
  6. Step 6: Final answer
    x = 304,462.21

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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.