Home / 380,628.44-525,247.17-217,278.45

Finding the Fourth Proportional to 380,628.44, 525,247.17 and 217,278.45

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Solution

The fourth proportional to 380,628.44, 525,247.17 and 217,278.45 is: 299,832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,628.44 : 525,247.17 = 217,278.45 : x
  2. Step 2: Convert to fraction form
    380,628.44/525,247.17 = 217,278.45/x
  3. Step 3: Cross multiply
    380,628.44x = 525,247.17 × 217,278.45
  4. Step 4: Simplify right side
    380,628.44x = 114,124,891,847.77
  5. Step 5: Solve for x
    x = 114,124,891,847.77/380,628.44
  6. Step 6: Final answer
    x = 299,832.80

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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.