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Finding the Fourth Proportional to 292,627.20, 438,940.80 and 105,644.80

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Solution

The fourth proportional to 292,627.20, 438,940.80 and 105,644.80 is: 158,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,627.20 : 438,940.80 = 105,644.80 : x
  2. Step 2: Convert to fraction form
    292,627.20/438,940.80 = 105,644.80/x
  3. Step 3: Cross multiply
    292,627.20x = 438,940.80 × 105,644.80
  4. Step 4: Simplify right side
    292,627.20x = 46,371,813,027.84
  5. Step 5: Solve for x
    x = 46,371,813,027.84/292,627.20
  6. Step 6: Final answer
    x = 158,467.20

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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.