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Finding the Fourth Proportional to 381,125.81, 525,915.69 and 220,032.85

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Solution

The fourth proportional to 381,125.81, 525,915.69 and 220,032.85 is: 303,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,125.81 : 525,915.69 = 220,032.85 : x
  2. Step 2: Convert to fraction form
    381,125.81/525,915.69 = 220,032.85/x
  3. Step 3: Cross multiply
    381,125.81x = 525,915.69 × 220,032.85
  4. Step 4: Simplify right side
    381,125.81x = 115,718,727,030.25
  5. Step 5: Solve for x
    x = 115,718,727,030.25/381,125.81
  6. Step 6: Final answer
    x = 303,623.43

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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.