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Finding the Fourth Proportional to 210,375.63, 290,336.67 and 119,712.15

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Solution

The fourth proportional to 210,375.63, 290,336.67 and 119,712.15 is: 165,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,375.63 : 290,336.67 = 119,712.15 : x
  2. Step 2: Convert to fraction form
    210,375.63/290,336.67 = 119,712.15/x
  3. Step 3: Cross multiply
    210,375.63x = 290,336.67 × 119,712.15
  4. Step 4: Simplify right side
    210,375.63x = 34,756,826,989.54
  5. Step 5: Solve for x
    x = 34,756,826,989.54/210,375.63
  6. Step 6: Final answer
    x = 165,213.18

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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.