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Finding the Fourth Proportional to 384,155.65, 530,188.23 and 214,400.71

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Solution

The fourth proportional to 384,155.65, 530,188.23 and 214,400.71 is: 295,902.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,155.65 : 530,188.23 = 214,400.71 : x
  2. Step 2: Convert to fraction form
    384,155.65/530,188.23 = 214,400.71/x
  3. Step 3: Cross multiply
    384,155.65x = 530,188.23 × 214,400.71
  4. Step 4: Simplify right side
    384,155.65x = 113,672,732,945.64
  5. Step 5: Solve for x
    x = 113,672,732,945.64/384,155.65
  6. Step 6: Final answer
    x = 295,902.80

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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.