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Finding the Fourth Proportional to 319,145.88, 478,730.97 and 119,445.24

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Solution

The fourth proportional to 319,145.88, 478,730.97 and 119,445.24 is: 179,172.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,145.88 : 478,730.97 = 119,445.24 : x
  2. Step 2: Convert to fraction form
    319,145.88/478,730.97 = 119,445.24/x
  3. Step 3: Cross multiply
    319,145.88x = 478,730.97 × 119,445.24
  4. Step 4: Simplify right side
    319,145.88x = 57,182,135,607.08
  5. Step 5: Solve for x
    x = 57,182,135,607.08/319,145.88
  6. Step 6: Final answer
    x = 179,172.41

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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.