Home / 382,715.47-528,079.26-221,562.73

Finding the Fourth Proportional to 382,715.47, 528,079.26 and 221,562.73

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Solution

The fourth proportional to 382,715.47, 528,079.26 and 221,562.73 is: 305,717.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,715.47 : 528,079.26 = 221,562.73 : x
  2. Step 2: Convert to fraction form
    382,715.47/528,079.26 = 221,562.73/x
  3. Step 3: Cross multiply
    382,715.47x = 528,079.26 × 221,562.73
  4. Step 4: Simplify right side
    382,715.47x = 117,002,682,501.98
  5. Step 5: Solve for x
    x = 117,002,682,501.98/382,715.47
  6. Step 6: Final answer
    x = 305,717.15

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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.