Home / 387,315.39-534,596.75-217,604.19

Finding the Fourth Proportional to 387,315.39, 534,596.75 and 217,604.19

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Solution

The fourth proportional to 387,315.39, 534,596.75 and 217,604.19 is: 300,350.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,315.39 : 534,596.75 = 217,604.19 : x
  2. Step 2: Convert to fraction form
    387,315.39/534,596.75 = 217,604.19/x
  3. Step 3: Cross multiply
    387,315.39x = 534,596.75 × 217,604.19
  4. Step 4: Simplify right side
    387,315.39x = 116,330,491,672.36
  5. Step 5: Solve for x
    x = 116,330,491,672.36/387,315.39
  6. Step 6: Final answer
    x = 300,350.81

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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.