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Finding the Fourth Proportional to 279,264.42, 385,379.10 and 151,940.52

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Solution

The fourth proportional to 279,264.42, 385,379.10 and 151,940.52 is: 209,674.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,264.42 : 385,379.10 = 151,940.52 : x
  2. Step 2: Convert to fraction form
    279,264.42/385,379.10 = 151,940.52/x
  3. Step 3: Cross multiply
    279,264.42x = 385,379.10 × 151,940.52
  4. Step 4: Simplify right side
    279,264.42x = 58,554,700,851.13
  5. Step 5: Solve for x
    x = 58,554,700,851.13/279,264.42
  6. Step 6: Final answer
    x = 209,674.76

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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.