Home / 386,989.04-534,040.44-217,218.80

Finding the Fourth Proportional to 386,989.04, 534,040.44 and 217,218.80

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Solution

The fourth proportional to 386,989.04, 534,040.44 and 217,218.80 is: 299,759.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,989.04 : 534,040.44 = 217,218.80 : x
  2. Step 2: Convert to fraction form
    386,989.04/534,040.44 = 217,218.80/x
  3. Step 3: Cross multiply
    386,989.04x = 534,040.44 × 217,218.80
  4. Step 4: Simplify right side
    386,989.04x = 116,003,623,528.27
  5. Step 5: Solve for x
    x = 116,003,623,528.27/386,989.04
  6. Step 6: Final answer
    x = 299,759.45

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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.