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Finding the Fourth Proportional to 261,661.76, 360,998.72 and 148,418.88

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Solution

The fourth proportional to 261,661.76, 360,998.72 and 148,418.88 is: 204,764.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,661.76 : 360,998.72 = 148,418.88 : x
  2. Step 2: Convert to fraction form
    261,661.76/360,998.72 = 148,418.88/x
  3. Step 3: Cross multiply
    261,661.76x = 360,998.72 × 148,418.88
  4. Step 4: Simplify right side
    261,661.76x = 53,579,025,703.83
  5. Step 5: Solve for x
    x = 53,579,025,703.83/261,661.76
  6. Step 6: Final answer
    x = 204,764.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.