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Finding the Fourth Proportional to 245,375.13, 368,062.74 and 76,895.40

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Solution

The fourth proportional to 245,375.13, 368,062.74 and 76,895.40 is: 115,343.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,375.13 : 368,062.74 = 76,895.40 : x
  2. Step 2: Convert to fraction form
    245,375.13/368,062.74 = 76,895.40/x
  3. Step 3: Cross multiply
    245,375.13x = 368,062.74 × 76,895.40
  4. Step 4: Simplify right side
    245,375.13x = 28,302,331,617.40
  5. Step 5: Solve for x
    x = 28,302,331,617.40/245,375.13
  6. Step 6: Final answer
    x = 115,343.11

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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.