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Finding the Fourth Proportional to 288,789.30, 432,892.35 and 131,130.90

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Solution

The fourth proportional to 288,789.30, 432,892.35 and 131,130.90 is: 196,563.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,789.30 : 432,892.35 = 131,130.90 : x
  2. Step 2: Convert to fraction form
    288,789.30/432,892.35 = 131,130.90/x
  3. Step 3: Cross multiply
    288,789.30x = 432,892.35 × 131,130.90
  4. Step 4: Simplify right side
    288,789.30x = 56,765,563,458.62
  5. Step 5: Solve for x
    x = 56,765,563,458.62/288,789.30
  6. Step 6: Final answer
    x = 196,563.94

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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.