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Finding the Fourth Proportional to 290,185.60, 435,351.84 and 140,497.60

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Solution

The fourth proportional to 290,185.60, 435,351.84 and 140,497.60 is: 210,781.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,185.60 : 435,351.84 = 140,497.60 : x
  2. Step 2: Convert to fraction form
    290,185.60/435,351.84 = 140,497.60/x
  3. Step 3: Cross multiply
    290,185.60x = 435,351.84 × 140,497.60
  4. Step 4: Simplify right side
    290,185.60x = 61,165,888,675.58
  5. Step 5: Solve for x
    x = 61,165,888,675.58/290,185.60
  6. Step 6: Final answer
    x = 210,781.96

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1.5x scale

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.