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Finding the Fourth Proportional to 245,959.20, 368,938.80 and 139,233.60

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Solution

The fourth proportional to 245,959.20, 368,938.80 and 139,233.60 is: 208,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,959.20 : 368,938.80 = 139,233.60 : x
  2. Step 2: Convert to fraction form
    245,959.20/368,938.80 = 139,233.60/x
  3. Step 3: Cross multiply
    245,959.20x = 368,938.80 × 139,233.60
  4. Step 4: Simplify right side
    245,959.20x = 51,368,677,303.68
  5. Step 5: Solve for x
    x = 51,368,677,303.68/245,959.20
  6. Step 6: Final answer
    x = 208,850.40

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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.