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Finding the Fourth Proportional to 395,981.40, 593,165.70 and 245,760.60

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Solution

The fourth proportional to 395,981.40, 593,165.70 and 245,760.60 is: 368,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,981.40 : 593,165.70 = 245,760.60 : x
  2. Step 2: Convert to fraction form
    395,981.40/593,165.70 = 245,760.60/x
  3. Step 3: Cross multiply
    395,981.40x = 593,165.70 × 245,760.60
  4. Step 4: Simplify right side
    395,981.40x = 145,776,758,331.42
  5. Step 5: Solve for x
    x = 145,776,758,331.42/395,981.40
  6. Step 6: Final answer
    x = 368,140.42

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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.