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Finding the Fourth Proportional to 295,741.49, 443,686.05 and 85,379.43

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Solution

The fourth proportional to 295,741.49, 443,686.05 and 85,379.43 is: 128,090.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,741.49 : 443,686.05 = 85,379.43 : x
  2. Step 2: Convert to fraction form
    295,741.49/443,686.05 = 85,379.43/x
  3. Step 3: Cross multiply
    295,741.49x = 443,686.05 × 85,379.43
  4. Step 4: Simplify right side
    295,741.49x = 37,881,662,047.95
  5. Step 5: Solve for x
    x = 37,881,662,047.95/295,741.49
  6. Step 6: Final answer
    x = 128,090.46

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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.