Home / 386,376.20-579,852.30-199,291.40

Finding the Fourth Proportional to 386,376.20, 579,852.30 and 199,291.40

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Solution

The fourth proportional to 386,376.20, 579,852.30 and 199,291.40 is: 299,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,376.20 : 579,852.30 = 199,291.40 : x
  2. Step 2: Convert to fraction form
    386,376.20/579,852.30 = 199,291.40/x
  3. Step 3: Cross multiply
    386,376.20x = 579,852.30 × 199,291.40
  4. Step 4: Simplify right side
    386,376.20x = 115,559,576,660.22
  5. Step 5: Solve for x
    x = 115,559,576,660.22/386,376.20
  6. Step 6: Final answer
    x = 299,085.65

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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.