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Finding the Fourth Proportional to 319,140.88, 478,723.47 and 119,440.24

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Solution

The fourth proportional to 319,140.88, 478,723.47 and 119,440.24 is: 179,164.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,140.88 : 478,723.47 = 119,440.24 : x
  2. Step 2: Convert to fraction form
    319,140.88/478,723.47 = 119,440.24/x
  3. Step 3: Cross multiply
    319,140.88x = 478,723.47 × 119,440.24
  4. Step 4: Simplify right side
    319,140.88x = 57,178,846,150.43
  5. Step 5: Solve for x
    x = 57,178,846,150.43/319,140.88
  6. Step 6: Final answer
    x = 179,164.91

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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.