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Finding the Fourth Proportional to 245,391.91, 368,088.45 and 74,615.20

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Solution

The fourth proportional to 245,391.91, 368,088.45 and 74,615.20 is: 111,922.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,391.91 : 368,088.45 = 74,615.20 : x
  2. Step 2: Convert to fraction form
    245,391.91/368,088.45 = 74,615.20/x
  3. Step 3: Cross multiply
    245,391.91x = 368,088.45 × 74,615.20
  4. Step 4: Simplify right side
    245,391.91x = 27,464,993,314.44
  5. Step 5: Solve for x
    x = 27,464,993,314.44/245,391.91
  6. Step 6: Final answer
    x = 111,922.98

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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.