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Finding the Fourth Proportional to 380,898.90, 571,387.23 and 131,548.50

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Solution

The fourth proportional to 380,898.90, 571,387.23 and 131,548.50 is: 197,336.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,898.90 : 571,387.23 = 131,548.50 : x
  2. Step 2: Convert to fraction form
    380,898.90/571,387.23 = 131,548.50/x
  3. Step 3: Cross multiply
    380,898.90x = 571,387.23 × 131,548.50
  4. Step 4: Simplify right side
    380,898.90x = 75,165,133,025.66
  5. Step 5: Solve for x
    x = 75,165,133,025.66/380,898.90
  6. Step 6: Final answer
    x = 197,336.18

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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.