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Finding the Fourth Proportional to 262,188.28, 392,904.96 and 112,388.50

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Solution

The fourth proportional to 262,188.28, 392,904.96 and 112,388.50 is: 168,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,188.28 : 392,904.96 = 112,388.50 : x
  2. Step 2: Convert to fraction form
    262,188.28/392,904.96 = 112,388.50/x
  3. Step 3: Cross multiply
    262,188.28x = 392,904.96 × 112,388.50
  4. Step 4: Simplify right side
    262,188.28x = 44,157,999,096.96
  5. Step 5: Solve for x
    x = 44,157,999,096.96/262,188.28
  6. Step 6: Final answer
    x = 168,420.95

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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.