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Finding the Fourth Proportional to 279,261.01, 385,389.80 and 151,941.43

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Solution

The fourth proportional to 279,261.01, 385,389.80 and 151,941.43 is: 209,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,261.01 : 385,389.80 = 151,941.43 : x
  2. Step 2: Convert to fraction form
    279,261.01/385,389.80 = 151,941.43/x
  3. Step 3: Cross multiply
    279,261.01x = 385,389.80 × 151,941.43
  4. Step 4: Simplify right side
    279,261.01x = 58,556,677,319.41
  5. Step 5: Solve for x
    x = 58,556,677,319.41/279,261.01
  6. Step 6: Final answer
    x = 209,684.40

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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.