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Finding the Fourth Proportional to 245,688.66, 368,540.28 and 68,208.75

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Solution

The fourth proportional to 245,688.66, 368,540.28 and 68,208.75 is: 102,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,688.66 : 368,540.28 = 68,208.75 : x
  2. Step 2: Convert to fraction form
    245,688.66/368,540.28 = 68,208.75/x
  3. Step 3: Cross multiply
    245,688.66x = 368,540.28 × 68,208.75
  4. Step 4: Simplify right side
    245,688.66x = 25,137,671,823.45
  5. Step 5: Solve for x
    x = 25,137,671,823.45/245,688.66
  6. Step 6: Final answer
    x = 102,315.15

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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.