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Finding the Fourth Proportional to 319,801.72, 479,600.52 and 130,261.72

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Solution

The fourth proportional to 319,801.72, 479,600.52 and 130,261.72 is: 195,351.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,801.72 : 479,600.52 = 130,261.72 : x
  2. Step 2: Convert to fraction form
    319,801.72/479,600.52 = 130,261.72/x
  3. Step 3: Cross multiply
    319,801.72x = 479,600.52 × 130,261.72
  4. Step 4: Simplify right side
    319,801.72x = 62,473,588,648.09
  5. Step 5: Solve for x
    x = 62,473,588,648.09/319,801.72
  6. Step 6: Final answer
    x = 195,351.01

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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.