Home / 381,767.28-526,845.18-209,701.20

Finding the Fourth Proportional to 381,767.28, 526,845.18 and 209,701.20

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Solution

The fourth proportional to 381,767.28, 526,845.18 and 209,701.20 is: 289,391.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,767.28 : 526,845.18 = 209,701.20 : x
  2. Step 2: Convert to fraction form
    381,767.28/526,845.18 = 209,701.20/x
  3. Step 3: Cross multiply
    381,767.28x = 526,845.18 × 209,701.20
  4. Step 4: Simplify right side
    381,767.28x = 110,480,066,460.22
  5. Step 5: Solve for x
    x = 110,480,066,460.22/381,767.28
  6. Step 6: Final answer
    x = 289,391.13

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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.