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Finding the Fourth Proportional to 319,932.30, 479,898.45 and 315,266.70

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Solution

The fourth proportional to 319,932.30, 479,898.45 and 315,266.70 is: 472,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,932.30 : 479,898.45 = 315,266.70 : x
  2. Step 2: Convert to fraction form
    319,932.30/479,898.45 = 315,266.70/x
  3. Step 3: Cross multiply
    319,932.30x = 479,898.45 × 315,266.70
  4. Step 4: Simplify right side
    319,932.30x = 151,296,000,666.62
  5. Step 5: Solve for x
    x = 151,296,000,666.62/319,932.30
  6. Step 6: Final answer
    x = 472,900.05

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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.