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Finding the Fourth Proportional to 261,391.50, 360,664.62 and 153,922.32

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Solution

The fourth proportional to 261,391.50, 360,664.62 and 153,922.32 is: 212,380.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,391.50 : 360,664.62 = 153,922.32 : x
  2. Step 2: Convert to fraction form
    261,391.50/360,664.62 = 153,922.32/x
  3. Step 3: Cross multiply
    261,391.50x = 360,664.62 × 153,922.32
  4. Step 4: Simplify right side
    261,391.50x = 55,514,335,052.32
  5. Step 5: Solve for x
    x = 55,514,335,052.32/261,391.50
  6. Step 6: Final answer
    x = 212,380.03

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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.