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Finding the Fourth Proportional to 319,595.56, 479,576.51 and 130,020.94

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Solution

The fourth proportional to 319,595.56, 479,576.51 and 130,020.94 is: 195,105.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,595.56 : 479,576.51 = 130,020.94 : x
  2. Step 2: Convert to fraction form
    319,595.56/479,576.51 = 130,020.94/x
  3. Step 3: Cross multiply
    319,595.56x = 479,576.51 × 130,020.94
  4. Step 4: Simplify right side
    319,595.56x = 62,354,988,632.12
  5. Step 5: Solve for x
    x = 62,354,988,632.12/319,595.56
  6. Step 6: Final answer
    x = 195,105.93

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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.