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Finding the Fourth Proportional to 205,403.40, 307,667.70 and 166,037.40

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Solution

The fourth proportional to 205,403.40, 307,667.70 and 166,037.40 is: 248,702.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,403.40 : 307,667.70 = 166,037.40 : x
  2. Step 2: Convert to fraction form
    205,403.40/307,667.70 = 166,037.40/x
  3. Step 3: Cross multiply
    205,403.40x = 307,667.70 × 166,037.40
  4. Step 4: Simplify right side
    205,403.40x = 51,084,344,971.98
  5. Step 5: Solve for x
    x = 51,084,344,971.98/205,403.40
  6. Step 6: Final answer
    x = 248,702.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.