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Finding the Fourth Proportional to 245,955.96, 368,985.78 and 79,731

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Solution

The fourth proportional to 245,955.96, 368,985.78 and 79,731 is: 119,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,955.96 : 368,985.78 = 79,731 : x
  2. Step 2: Convert to fraction form
    245,955.96/368,985.78 = 79,731/x
  3. Step 3: Cross multiply
    245,955.96x = 368,985.78 × 79,731
  4. Step 4: Simplify right side
    245,955.96x = 29,419,605,225.18
  5. Step 5: Solve for x
    x = 29,419,605,225.18/245,955.96
  6. Step 6: Final answer
    x = 119,613.30

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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.