Home / 386,366.20-579,837.30-199,281.40

Finding the Fourth Proportional to 386,366.20, 579,837.30 and 199,281.40

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Solution

The fourth proportional to 386,366.20, 579,837.30 and 199,281.40 is: 299,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,366.20 : 579,837.30 = 199,281.40 : x
  2. Step 2: Convert to fraction form
    386,366.20/579,837.30 = 199,281.40/x
  3. Step 3: Cross multiply
    386,366.20x = 579,837.30 × 199,281.40
  4. Step 4: Simplify right side
    386,366.20x = 115,550,788,916.22
  5. Step 5: Solve for x
    x = 115,550,788,916.22/386,366.20
  6. Step 6: Final answer
    x = 299,070.65

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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.