Home / 408,488.16-611,422.09-218,473.40

Finding the Fourth Proportional to 408,488.16, 611,422.09 and 218,473.40

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Solution

The fourth proportional to 408,488.16, 611,422.09 and 218,473.40 is: 327,009.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,488.16 : 611,422.09 = 218,473.40 : x
  2. Step 2: Convert to fraction form
    408,488.16/611,422.09 = 218,473.40/x
  3. Step 3: Cross multiply
    408,488.16x = 611,422.09 × 218,473.40
  4. Step 4: Simplify right side
    408,488.16x = 133,579,462,837.41
  5. Step 5: Solve for x
    x = 133,579,462,837.41/408,488.16
  6. Step 6: Final answer
    x = 327,009.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.