Home / 381,823.72-526,885.91-220,689.21

Finding the Fourth Proportional to 381,823.72, 526,885.91 and 220,689.21

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Solution

The fourth proportional to 381,823.72, 526,885.91 and 220,689.21 is: 304,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,823.72 : 526,885.91 = 220,689.21 : x
  2. Step 2: Convert to fraction form
    381,823.72/526,885.91 = 220,689.21/x
  3. Step 3: Cross multiply
    381,823.72x = 526,885.91 × 220,689.21
  4. Step 4: Simplify right side
    381,823.72x = 116,278,031,500.16
  5. Step 5: Solve for x
    x = 116,278,031,500.16/381,823.72
  6. Step 6: Final answer
    x = 304,533.28

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1.5x scale

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.