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Finding the Fourth Proportional to 290,055.40, 400,684.26 and 223,838.44

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Solution

The fourth proportional to 290,055.40, 400,684.26 and 223,838.44 is: 309,211.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,055.40 : 400,684.26 = 223,838.44 : x
  2. Step 2: Convert to fraction form
    290,055.40/400,684.26 = 223,838.44/x
  3. Step 3: Cross multiply
    290,055.40x = 400,684.26 × 223,838.44
  4. Step 4: Simplify right side
    290,055.40x = 89,688,539,690.95
  5. Step 5: Solve for x
    x = 89,688,539,690.95/290,055.40
  6. Step 6: Final answer
    x = 309,211.76

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1.5x scale

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.