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Finding the Fourth Proportional to 290,628.12, 435,683.88 and 113,093.64

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Solution

The fourth proportional to 290,628.12, 435,683.88 and 113,093.64 is: 169,539.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,628.12 : 435,683.88 = 113,093.64 : x
  2. Step 2: Convert to fraction form
    290,628.12/435,683.88 = 113,093.64/x
  3. Step 3: Cross multiply
    290,628.12x = 435,683.88 × 113,093.64
  4. Step 4: Simplify right side
    290,628.12x = 49,273,075,878.52
  5. Step 5: Solve for x
    x = 49,273,075,878.52/290,628.12
  6. Step 6: Final answer
    x = 169,539.95

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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.