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Finding the Fourth Proportional to 208,132.63, 312,007.57 and 74,980.32

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Solution

The fourth proportional to 208,132.63, 312,007.57 and 74,980.32 is: 112,401.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,132.63 : 312,007.57 = 74,980.32 : x
  2. Step 2: Convert to fraction form
    208,132.63/312,007.57 = 74,980.32/x
  3. Step 3: Cross multiply
    208,132.63x = 312,007.57 × 74,980.32
  4. Step 4: Simplify right side
    208,132.63x = 23,394,426,083.54
  5. Step 5: Solve for x
    x = 23,394,426,083.54/208,132.63
  6. Step 6: Final answer
    x = 112,401.53

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1.5x scale

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.