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Finding the Fourth Proportional to 395,966.40, 593,143.20 and 245,745.60

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Solution

The fourth proportional to 395,966.40, 593,143.20 and 245,745.60 is: 368,117.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,966.40 : 593,143.20 = 245,745.60 : x
  2. Step 2: Convert to fraction form
    395,966.40/593,143.20 = 245,745.60/x
  3. Step 3: Cross multiply
    395,966.40x = 593,143.20 × 245,745.60
  4. Step 4: Simplify right side
    395,966.40x = 145,762,331,569.92
  5. Step 5: Solve for x
    x = 145,762,331,569.92/395,966.40
  6. Step 6: Final answer
    x = 368,117.93

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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.