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Finding the Fourth Proportional to 318,604.76, 477,837.80 and 105,322.28

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Solution

The fourth proportional to 318,604.76, 477,837.80 and 105,322.28 is: 157,960.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,604.76 : 477,837.80 = 105,322.28 : x
  2. Step 2: Convert to fraction form
    318,604.76/477,837.80 = 105,322.28/x
  3. Step 3: Cross multiply
    318,604.76x = 477,837.80 × 105,322.28
  4. Step 4: Simplify right side
    318,604.76x = 50,326,964,440.30
  5. Step 5: Solve for x
    x = 50,326,964,440.30/318,604.76
  6. Step 6: Final answer
    x = 157,960.49

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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.