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Finding the Fourth Proportional to 245,463.96, 368,200.56 and 76,980.60

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Solution

The fourth proportional to 245,463.96, 368,200.56 and 76,980.60 is: 115,472.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,463.96 : 368,200.56 = 76,980.60 : x
  2. Step 2: Convert to fraction form
    245,463.96/368,200.56 = 76,980.60/x
  3. Step 3: Cross multiply
    245,463.96x = 368,200.56 × 76,980.60
  4. Step 4: Simplify right side
    245,463.96x = 28,344,300,029.14
  5. Step 5: Solve for x
    x = 28,344,300,029.14/245,463.96
  6. Step 6: Final answer
    x = 115,472.35

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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.