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Finding the Fourth Proportional to 208,309.69, 287,388.10 and 153,992.27

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Solution

The fourth proportional to 208,309.69, 287,388.10 and 153,992.27 is: 212,450.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,309.69 : 287,388.10 = 153,992.27 : x
  2. Step 2: Convert to fraction form
    208,309.69/287,388.10 = 153,992.27/x
  3. Step 3: Cross multiply
    208,309.69x = 287,388.10 × 153,992.27
  4. Step 4: Simplify right side
    208,309.69x = 44,255,543,683.09
  5. Step 5: Solve for x
    x = 44,255,543,683.09/208,309.69
  6. Step 6: Final answer
    x = 212,450.73

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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.