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Finding the Fourth Proportional to 384,263.70, 530,261.91 and 214,508.58

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Solution

The fourth proportional to 384,263.70, 530,261.91 and 214,508.58 is: 296,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,263.70 : 530,261.91 = 214,508.58 : x
  2. Step 2: Convert to fraction form
    384,263.70/530,261.91 = 214,508.58/x
  3. Step 3: Cross multiply
    384,263.70x = 530,261.91 × 214,508.58
  4. Step 4: Simplify right side
    384,263.70x = 113,745,729,342.19
  5. Step 5: Solve for x
    x = 113,745,729,342.19/384,263.70
  6. Step 6: Final answer
    x = 296,009.56

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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.