Home / 261,408.78-360,729.14-145,116.26

Finding the Fourth Proportional to 261,408.78, 360,729.14 and 145,116.26

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Solution

The fourth proportional to 261,408.78, 360,729.14 and 145,116.26 is: 200,252.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,408.78 : 360,729.14 = 145,116.26 : x
  2. Step 2: Convert to fraction form
    261,408.78/360,729.14 = 145,116.26/x
  3. Step 3: Cross multiply
    261,408.78x = 360,729.14 × 145,116.26
  4. Step 4: Simplify right side
    261,408.78x = 52,347,663,669.82
  5. Step 5: Solve for x
    x = 52,347,663,669.82/261,408.78
  6. Step 6: Final answer
    x = 200,252.12

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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.