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Finding the Fourth Proportional to 245,601, 368,518.14 and 79,389

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Solution

The fourth proportional to 245,601, 368,518.14 and 79,389 is: 119,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,601 : 368,518.14 = 79,389 : x
  2. Step 2: Convert to fraction form
    245,601/368,518.14 = 79,389/x
  3. Step 3: Cross multiply
    245,601x = 368,518.14 × 79,389
  4. Step 4: Simplify right side
    245,601x = 29,256,286,616.46
  5. Step 5: Solve for x
    x = 29,256,286,616.46/245,601
  6. Step 6: Final answer
    x = 119,121.20

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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.