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Finding the Fourth Proportional to 315,338.21, 435,176.88 and 179,368.66

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Solution

The fourth proportional to 315,338.21, 435,176.88 and 179,368.66 is: 247,534.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,338.21 : 435,176.88 = 179,368.66 : x
  2. Step 2: Convert to fraction form
    315,338.21/435,176.88 = 179,368.66/x
  3. Step 3: Cross multiply
    315,338.21x = 435,176.88 × 179,368.66
  4. Step 4: Simplify right side
    315,338.21x = 78,057,093,828.58
  5. Step 5: Solve for x
    x = 78,057,093,828.58/315,338.21
  6. Step 6: Final answer
    x = 247,534.52

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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.