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Finding the Fourth Proportional to 845,370, 1,268,128.78 and 214,283.76

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Solution

The fourth proportional to 845,370, 1,268,128.78 and 214,283.76 is: 321,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,370 : 1,268,128.78 = 214,283.76 : x
  2. Step 2: Convert to fraction form
    845,370/1,268,128.78 = 214,283.76/x
  3. Step 3: Cross multiply
    845,370x = 1,268,128.78 × 214,283.76
  4. Step 4: Simplify right side
    845,370x = 271,739,403,142.61
  5. Step 5: Solve for x
    x = 271,739,403,142.61/845,370
  6. Step 6: Final answer
    x = 321,444.34

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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.