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Finding the Fourth Proportional to 208,660.89, 312,886.10 and 148,655.09

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Solution

The fourth proportional to 208,660.89, 312,886.10 and 148,655.09 is: 222,907.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,660.89 : 312,886.10 = 148,655.09 : x
  2. Step 2: Convert to fraction form
    208,660.89/312,886.10 = 148,655.09/x
  3. Step 3: Cross multiply
    208,660.89x = 312,886.10 × 148,655.09
  4. Step 4: Simplify right side
    208,660.89x = 46,512,109,047.54
  5. Step 5: Solve for x
    x = 46,512,109,047.54/208,660.89
  6. Step 6: Final answer
    x = 222,907.65

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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.