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Finding the Fourth Proportional to 245,511.60, 368,310.60 and 87,831.60

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Solution

The fourth proportional to 245,511.60, 368,310.60 and 87,831.60 is: 131,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,511.60 : 368,310.60 = 87,831.60 : x
  2. Step 2: Convert to fraction form
    245,511.60/368,310.60 = 87,831.60/x
  3. Step 3: Cross multiply
    245,511.60x = 368,310.60 × 87,831.60
  4. Step 4: Simplify right side
    245,511.60x = 32,349,309,294.96
  5. Step 5: Solve for x
    x = 32,349,309,294.96/245,511.60
  6. Step 6: Final answer
    x = 131,762.85

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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.