Home / 386,988.04-534,039.06-217,217.80

Finding the Fourth Proportional to 386,988.04, 534,039.06 and 217,217.80

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Solution

The fourth proportional to 386,988.04, 534,039.06 and 217,217.80 is: 299,758.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,988.04 : 534,039.06 = 217,217.80 : x
  2. Step 2: Convert to fraction form
    386,988.04/534,039.06 = 217,217.80/x
  3. Step 3: Cross multiply
    386,988.04x = 534,039.06 × 217,217.80
  4. Step 4: Simplify right side
    386,988.04x = 116,002,789,727.27
  5. Step 5: Solve for x
    x = 116,002,789,727.27/386,988.04
  6. Step 6: Final answer
    x = 299,758.07

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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.