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Finding the Fourth Proportional to 319,853.96, 479,946.96 and 130,453.28

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Solution

The fourth proportional to 319,853.96, 479,946.96 and 130,453.28 is: 195,747.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,853.96 : 479,946.96 = 130,453.28 : x
  2. Step 2: Convert to fraction form
    319,853.96/479,946.96 = 130,453.28/x
  3. Step 3: Cross multiply
    319,853.96x = 479,946.96 × 130,453.28
  4. Step 4: Simplify right side
    319,853.96x = 62,610,655,158.03
  5. Step 5: Solve for x
    x = 62,610,655,158.03/319,853.96
  6. Step 6: Final answer
    x = 195,747.63

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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.