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Finding the Fourth Proportional to 245,369.62, 368,054.48 and 76,889.90

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Solution

The fourth proportional to 245,369.62, 368,054.48 and 76,889.90 is: 115,334.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,369.62 : 368,054.48 = 76,889.90 : x
  2. Step 2: Convert to fraction form
    245,369.62/368,054.48 = 76,889.90/x
  3. Step 3: Cross multiply
    245,369.62x = 368,054.48 × 76,889.90
  4. Step 4: Simplify right side
    245,369.62x = 28,299,671,777.30
  5. Step 5: Solve for x
    x = 28,299,671,777.30/245,369.62
  6. Step 6: Final answer
    x = 115,334.87

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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.