Home / 382,720.47-528,086.16-221,567.73

Finding the Fourth Proportional to 382,720.47, 528,086.16 and 221,567.73

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Solution

The fourth proportional to 382,720.47, 528,086.16 and 221,567.73 is: 305,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,720.47 : 528,086.16 = 221,567.73 : x
  2. Step 2: Convert to fraction form
    382,720.47/528,086.16 = 221,567.73/x
  3. Step 3: Cross multiply
    382,720.47x = 528,086.16 × 221,567.73
  4. Step 4: Simplify right side
    382,720.47x = 117,006,851,715.62
  5. Step 5: Solve for x
    x = 117,006,851,715.62/382,720.47
  6. Step 6: Final answer
    x = 305,724.05

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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.