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Finding the Fourth Proportional to 245,620.16, 368,430.24 and 68,127.20

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Solution

The fourth proportional to 245,620.16, 368,430.24 and 68,127.20 is: 102,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,620.16 : 368,430.24 = 68,127.20 : x
  2. Step 2: Convert to fraction form
    245,620.16/368,430.24 = 68,127.20/x
  3. Step 3: Cross multiply
    245,620.16x = 368,430.24 × 68,127.20
  4. Step 4: Simplify right side
    245,620.16x = 25,100,120,646.53
  5. Step 5: Solve for x
    x = 25,100,120,646.53/245,620.16
  6. Step 6: Final answer
    x = 102,190.80

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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.