Home / 210,752.27-290,864.69-138,216.16

Finding the Fourth Proportional to 210,752.27, 290,864.69 and 138,216.16

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Solution

The fourth proportional to 210,752.27, 290,864.69 and 138,216.16 is: 190,755.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,752.27 : 290,864.69 = 138,216.16 : x
  2. Step 2: Convert to fraction form
    210,752.27/290,864.69 = 138,216.16/x
  3. Step 3: Cross multiply
    210,752.27x = 290,864.69 × 138,216.16
  4. Step 4: Simplify right side
    210,752.27x = 40,202,200,531.39
  5. Step 5: Solve for x
    x = 40,202,200,531.39/210,752.27
  6. Step 6: Final answer
    x = 190,755.72

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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.