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Finding the Fourth Proportional to 247,078.40, 340,968.03 and 133,901.15

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Solution

The fourth proportional to 247,078.40, 340,968.03 and 133,901.15 is: 184,783.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,078.40 : 340,968.03 = 133,901.15 : x
  2. Step 2: Convert to fraction form
    247,078.40/340,968.03 = 133,901.15/x
  3. Step 3: Cross multiply
    247,078.40x = 340,968.03 × 133,901.15
  4. Step 4: Simplify right side
    247,078.40x = 45,656,011,330.23
  5. Step 5: Solve for x
    x = 45,656,011,330.23/247,078.40
  6. Step 6: Final answer
    x = 184,783.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.