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Finding the Fourth Proportional to 279,927.70, 419,602.17 and 130,045.70

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Solution

The fourth proportional to 279,927.70, 419,602.17 and 130,045.70 is: 194,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,927.70 : 419,602.17 = 130,045.70 : x
  2. Step 2: Convert to fraction form
    279,927.70/419,602.17 = 130,045.70/x
  3. Step 3: Cross multiply
    279,927.70x = 419,602.17 × 130,045.70
  4. Step 4: Simplify right side
    279,927.70x = 54,567,459,455.85
  5. Step 5: Solve for x
    x = 54,567,459,455.85/279,927.70
  6. Step 6: Final answer
    x = 194,934.12

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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.