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Finding the Fourth Proportional to 207,370.40, 310,472.40 and 186,375.20

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Solution

The fourth proportional to 207,370.40, 310,472.40 and 186,375.20 is: 279,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,370.40 : 310,472.40 = 186,375.20 : x
  2. Step 2: Convert to fraction form
    207,370.40/310,472.40 = 186,375.20/x
  3. Step 3: Cross multiply
    207,370.40x = 310,472.40 × 186,375.20
  4. Step 4: Simplify right side
    207,370.40x = 57,864,355,644.48
  5. Step 5: Solve for x
    x = 57,864,355,644.48/207,370.40
  6. Step 6: Final answer
    x = 279,038.65

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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.