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Finding the Fourth Proportional to 288,845.40, 433,203.30 and 189,701.40

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Solution

The fourth proportional to 288,845.40, 433,203.30 and 189,701.40 is: 284,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,845.40 : 433,203.30 = 189,701.40 : x
  2. Step 2: Convert to fraction form
    288,845.40/433,203.30 = 189,701.40/x
  3. Step 3: Cross multiply
    288,845.40x = 433,203.30 × 189,701.40
  4. Step 4: Simplify right side
    288,845.40x = 82,179,272,494.62
  5. Step 5: Solve for x
    x = 82,179,272,494.62/288,845.40
  6. Step 6: Final answer
    x = 284,509.54

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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.