Home / 386,868.13-533,901.71-217,102.25

Finding the Fourth Proportional to 386,868.13, 533,901.71 and 217,102.25

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Solution

The fourth proportional to 386,868.13, 533,901.71 and 217,102.25 is: 299,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,868.13 : 533,901.71 = 217,102.25 : x
  2. Step 2: Convert to fraction form
    386,868.13/533,901.71 = 217,102.25/x
  3. Step 3: Cross multiply
    386,868.13x = 533,901.71 × 217,102.25
  4. Step 4: Simplify right side
    386,868.13x = 115,911,262,519.85
  5. Step 5: Solve for x
    x = 115,911,262,519.85/386,868.13
  6. Step 6: Final answer
    x = 299,614.40

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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.