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Finding the Fourth Proportional to 319,483.61, 479,045.59 and 106,137.30

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Solution

The fourth proportional to 319,483.61, 479,045.59 and 106,137.30 is: 159,146.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,483.61 : 479,045.59 = 106,137.30 : x
  2. Step 2: Convert to fraction form
    319,483.61/479,045.59 = 106,137.30/x
  3. Step 3: Cross multiply
    319,483.61x = 479,045.59 × 106,137.30
  4. Step 4: Simplify right side
    319,483.61x = 50,844,604,968.82
  5. Step 5: Solve for x
    x = 50,844,604,968.82/319,483.61
  6. Step 6: Final answer
    x = 159,146.21

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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.