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Finding the Fourth Proportional to 209,848.70, 314,736.60 and 76,660.40

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Solution

The fourth proportional to 209,848.70, 314,736.60 and 76,660.40 is: 114,977.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,848.70 : 314,736.60 = 76,660.40 : x
  2. Step 2: Convert to fraction form
    209,848.70/314,736.60 = 76,660.40/x
  3. Step 3: Cross multiply
    209,848.70x = 314,736.60 × 76,660.40
  4. Step 4: Simplify right side
    209,848.70x = 24,127,833,650.64
  5. Step 5: Solve for x
    x = 24,127,833,650.64/209,848.70
  6. Step 6: Final answer
    x = 114,977.28

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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.