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Finding the Fourth Proportional to 381,862.52, 526,911.72 and 220,686.46

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Solution

The fourth proportional to 381,862.52, 526,911.72 and 220,686.46 is: 304,513.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,862.52 : 526,911.72 = 220,686.46 : x
  2. Step 2: Convert to fraction form
    381,862.52/526,911.72 = 220,686.46/x
  3. Step 3: Cross multiply
    381,862.52x = 526,911.72 × 220,686.46
  4. Step 4: Simplify right side
    381,862.52x = 116,282,280,074.46
  5. Step 5: Solve for x
    x = 116,282,280,074.46/381,862.52
  6. Step 6: Final answer
    x = 304,513.47

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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.