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Finding the Fourth Proportional to 315,854.15, 435,878.01 and 179,888.09

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Solution

The fourth proportional to 315,854.15, 435,878.01 and 179,888.09 is: 248,245.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,854.15 : 435,878.01 = 179,888.09 : x
  2. Step 2: Convert to fraction form
    315,854.15/435,878.01 = 179,888.09/x
  3. Step 3: Cross multiply
    315,854.15x = 435,878.01 × 179,888.09
  4. Step 4: Simplify right side
    315,854.15x = 78,409,260,512.51
  5. Step 5: Solve for x
    x = 78,409,260,512.51/315,854.15
  6. Step 6: Final answer
    x = 248,245.15

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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.