Home / 387,275.11-534,441.78-217,509.25

Finding the Fourth Proportional to 387,275.11, 534,441.78 and 217,509.25

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Solution

The fourth proportional to 387,275.11, 534,441.78 and 217,509.25 is: 300,163.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,275.11 : 534,441.78 = 217,509.25 : x
  2. Step 2: Convert to fraction form
    387,275.11/534,441.78 = 217,509.25/x
  3. Step 3: Cross multiply
    387,275.11x = 534,441.78 × 217,509.25
  4. Step 4: Simplify right side
    387,275.11x = 116,246,030,736.47
  5. Step 5: Solve for x
    x = 116,246,030,736.47/387,275.11
  6. Step 6: Final answer
    x = 300,163.96

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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.