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Finding the Fourth Proportional to 319,688.85, 479,612.20 and 95,048.31

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Solution

The fourth proportional to 319,688.85, 479,612.20 and 95,048.31 is: 142,595.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,688.85 : 479,612.20 = 95,048.31 : x
  2. Step 2: Convert to fraction form
    319,688.85/479,612.20 = 95,048.31/x
  3. Step 3: Cross multiply
    319,688.85x = 479,612.20 × 95,048.31
  4. Step 4: Simplify right side
    319,688.85x = 45,586,329,065.38
  5. Step 5: Solve for x
    x = 45,586,329,065.38/319,688.85
  6. Step 6: Final answer
    x = 142,595.93

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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.