Home / 258,215.72-356,337.90-145,038.56

Finding the Fourth Proportional to 258,215.72, 356,337.90 and 145,038.56

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Solution

The fourth proportional to 258,215.72, 356,337.90 and 145,038.56 is: 200,153.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,215.72 : 356,337.90 = 145,038.56 : x
  2. Step 2: Convert to fraction form
    258,215.72/356,337.90 = 145,038.56/x
  3. Step 3: Cross multiply
    258,215.72x = 356,337.90 × 145,038.56
  4. Step 4: Simplify right side
    258,215.72x = 51,682,735,889.42
  5. Step 5: Solve for x
    x = 51,682,735,889.42/258,215.72
  6. Step 6: Final answer
    x = 200,153.33

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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.