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Finding the Fourth Proportional to 245,348.78, 368,023.14 and 79,136.78

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Solution

The fourth proportional to 245,348.78, 368,023.14 and 79,136.78 is: 118,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,348.78 : 368,023.14 = 79,136.78 : x
  2. Step 2: Convert to fraction form
    245,348.78/368,023.14 = 79,136.78/x
  3. Step 3: Cross multiply
    245,348.78x = 368,023.14 × 79,136.78
  4. Step 4: Simplify right side
    245,348.78x = 29,124,166,265.09
  5. Step 5: Solve for x
    x = 29,124,166,265.09/245,348.78
  6. Step 6: Final answer
    x = 118,705.16

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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.