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Finding the Fourth Proportional to 290,054.40, 400,682.88 and 223,837.44

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Solution

The fourth proportional to 290,054.40, 400,682.88 and 223,837.44 is: 309,210.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,054.40 : 400,682.88 = 223,837.44 : x
  2. Step 2: Convert to fraction form
    290,054.40/400,682.88 = 223,837.44/x
  3. Step 3: Cross multiply
    290,054.40x = 400,682.88 × 223,837.44
  4. Step 4: Simplify right side
    290,054.40x = 89,687,830,111.03
  5. Step 5: Solve for x
    x = 89,687,830,111.03/290,054.40
  6. Step 6: Final answer
    x = 309,210.38

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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.