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Finding the Fourth Proportional to 386,758.53, 533,730.87 and 214,679.70

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Solution

The fourth proportional to 386,758.53, 533,730.87 and 214,679.70 is: 296,260.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,758.53 : 533,730.87 = 214,679.70 : x
  2. Step 2: Convert to fraction form
    386,758.53/533,730.87 = 214,679.70/x
  3. Step 3: Cross multiply
    386,758.53x = 533,730.87 × 214,679.70
  4. Step 4: Simplify right side
    386,758.53x = 114,581,183,052.34
  5. Step 5: Solve for x
    x = 114,581,183,052.34/386,758.53
  6. Step 6: Final answer
    x = 296,260.26

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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.