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Finding the Fourth Proportional to 245,763.21, 368,788.11 and 103,599.78

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Solution

The fourth proportional to 245,763.21, 368,788.11 and 103,599.78 is: 155,460.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,763.21 : 368,788.11 = 103,599.78 : x
  2. Step 2: Convert to fraction form
    245,763.21/368,788.11 = 103,599.78/x
  3. Step 3: Cross multiply
    245,763.21x = 368,788.11 × 103,599.78
  4. Step 4: Simplify right side
    245,763.21x = 38,206,367,062.62
  5. Step 5: Solve for x
    x = 38,206,367,062.62/245,763.21
  6. Step 6: Final answer
    x = 155,460.08

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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.