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Finding the Fourth Proportional to 245,773.85, 368,663.20 and 77,290.40

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Solution

The fourth proportional to 245,773.85, 368,663.20 and 77,290.40 is: 115,936.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,773.85 : 368,663.20 = 77,290.40 : x
  2. Step 2: Convert to fraction form
    245,773.85/368,663.20 = 77,290.40/x
  3. Step 3: Cross multiply
    245,773.85x = 368,663.20 × 77,290.40
  4. Step 4: Simplify right side
    245,773.85x = 28,494,126,921.71
  5. Step 5: Solve for x
    x = 28,494,126,921.71/245,773.85
  6. Step 6: Final answer
    x = 115,936.37

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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.