Home / 292,213.86-438,364.59-102,640.78

Finding the Fourth Proportional to 292,213.86, 438,364.59 and 102,640.78

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Solution

The fourth proportional to 292,213.86, 438,364.59 and 102,640.78 is: 153,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,213.86 : 438,364.59 = 102,640.78 : x
  2. Step 2: Convert to fraction form
    292,213.86/438,364.59 = 102,640.78/x
  3. Step 3: Cross multiply
    292,213.86x = 438,364.59 × 102,640.78
  4. Step 4: Simplify right side
    292,213.86x = 44,994,083,441.98
  5. Step 5: Solve for x
    x = 44,994,083,441.98/292,213.86
  6. Step 6: Final answer
    x = 153,976.55

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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.