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Finding the Fourth Proportional to 210,608.37, 290,639.13 and 119,964.30

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Solution

The fourth proportional to 210,608.37, 290,639.13 and 119,964.30 is: 165,550.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,608.37 : 290,639.13 = 119,964.30 : x
  2. Step 2: Convert to fraction form
    210,608.37/290,639.13 = 119,964.30/x
  3. Step 3: Cross multiply
    210,608.37x = 290,639.13 × 119,964.30
  4. Step 4: Simplify right side
    210,608.37x = 34,866,319,783.06
  5. Step 5: Solve for x
    x = 34,866,319,783.06/210,608.37
  6. Step 6: Final answer
    x = 165,550.49

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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.