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Finding the Fourth Proportional to 381,348.19, 526,266.64 and 220,217.32

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Solution

The fourth proportional to 381,348.19, 526,266.64 and 220,217.32 is: 303,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,348.19 : 526,266.64 = 220,217.32 : x
  2. Step 2: Convert to fraction form
    381,348.19/526,266.64 = 220,217.32/x
  3. Step 3: Cross multiply
    381,348.19x = 526,266.64 × 220,217.32
  4. Step 4: Simplify right side
    381,348.19x = 115,893,029,066.21
  5. Step 5: Solve for x
    x = 115,893,029,066.21/381,348.19
  6. Step 6: Final answer
    x = 303,903.45

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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.