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Finding the Fourth Proportional to 381,888.72, 526,887.60 and 220,685.04

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Solution

The fourth proportional to 381,888.72, 526,887.60 and 220,685.04 is: 304,476.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,888.72 : 526,887.60 = 220,685.04 : x
  2. Step 2: Convert to fraction form
    381,888.72/526,887.60 = 220,685.04/x
  3. Step 3: Cross multiply
    381,888.72x = 526,887.60 × 220,685.04
  4. Step 4: Simplify right side
    381,888.72x = 116,276,211,081.50
  5. Step 5: Solve for x
    x = 116,276,211,081.50/381,888.72
  6. Step 6: Final answer
    x = 304,476.68

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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.