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Finding the Fourth Proportional to 354,927.40, 532,391.10 and 340,930.60

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Solution

The fourth proportional to 354,927.40, 532,391.10 and 340,930.60 is: 511,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,927.40 : 532,391.10 = 340,930.60 : x
  2. Step 2: Convert to fraction form
    354,927.40/532,391.10 = 340,930.60/x
  3. Step 3: Cross multiply
    354,927.40x = 532,391.10 × 340,930.60
  4. Step 4: Simplify right side
    354,927.40x = 181,508,417,157.66
  5. Step 5: Solve for x
    x = 181,508,417,157.66/354,927.40
  6. Step 6: Final answer
    x = 511,395.90

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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.