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Finding the Fourth Proportional to 288,917.30, 433,203.15 and 148,949.30

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Solution

The fourth proportional to 288,917.30, 433,203.15 and 148,949.30 is: 223,334.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,917.30 : 433,203.15 = 148,949.30 : x
  2. Step 2: Convert to fraction form
    288,917.30/433,203.15 = 148,949.30/x
  3. Step 3: Cross multiply
    288,917.30x = 433,203.15 × 148,949.30
  4. Step 4: Simplify right side
    288,917.30x = 64,525,305,950.30
  5. Step 5: Solve for x
    x = 64,525,305,950.30/288,917.30
  6. Step 6: Final answer
    x = 223,334.86

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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.