Home / 381,309.11-526,189.02-209,223.29

Finding the Fourth Proportional to 381,309.11, 526,189.02 and 209,223.29

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Solution

The fourth proportional to 381,309.11, 526,189.02 and 209,223.29 is: 288,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,309.11 : 526,189.02 = 209,223.29 : x
  2. Step 2: Convert to fraction form
    381,309.11/526,189.02 = 209,223.29/x
  3. Step 3: Cross multiply
    381,309.11x = 526,189.02 × 209,223.29
  4. Step 4: Simplify right side
    381,309.11x = 110,090,997,926.28
  5. Step 5: Solve for x
    x = 110,090,997,926.28/381,309.11
  6. Step 6: Final answer
    x = 288,718.51

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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.