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Finding the Fourth Proportional to 315,928.42, 435,930.30 and 179,965.01

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Solution

The fourth proportional to 315,928.42, 435,930.30 and 179,965.01 is: 248,322.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,928.42 : 435,930.30 = 179,965.01 : x
  2. Step 2: Convert to fraction form
    315,928.42/435,930.30 = 179,965.01/x
  3. Step 3: Cross multiply
    315,928.42x = 435,930.30 × 179,965.01
  4. Step 4: Simplify right side
    315,928.42x = 78,452,201,888.63
  5. Step 5: Solve for x
    x = 78,452,201,888.63/315,928.42
  6. Step 6: Final answer
    x = 248,322.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.