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Finding the Fourth Proportional to 319,458.90, 479,245.73 and 109,047.63

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Solution

The fourth proportional to 319,458.90, 479,245.73 and 109,047.63 is: 163,591.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,458.90 : 479,245.73 = 109,047.63 : x
  2. Step 2: Convert to fraction form
    319,458.90/479,245.73 = 109,047.63/x
  3. Step 3: Cross multiply
    319,458.90x = 479,245.73 × 109,047.63
  4. Step 4: Simplify right side
    319,458.90x = 52,260,610,498.88
  5. Step 5: Solve for x
    x = 52,260,610,498.88/319,458.90
  6. Step 6: Final answer
    x = 163,591.03

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1.5x scale

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.