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Finding the Fourth Proportional to 381,840.60, 526,900.51 and 220,747.40

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Solution

The fourth proportional to 381,840.60, 526,900.51 and 220,747.40 is: 304,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,840.60 : 526,900.51 = 220,747.40 : x
  2. Step 2: Convert to fraction form
    381,840.60/526,900.51 = 220,747.40/x
  3. Step 3: Cross multiply
    381,840.60x = 526,900.51 × 220,747.40
  4. Step 4: Simplify right side
    381,840.60x = 116,311,917,641.17
  5. Step 5: Solve for x
    x = 116,311,917,641.17/381,840.60
  6. Step 6: Final answer
    x = 304,608.57

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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.