Home / 210,479.12-290,460.12-114,991.28

Finding the Fourth Proportional to 210,479.12, 290,460.12 and 114,991.28

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Solution

The fourth proportional to 210,479.12, 290,460.12 and 114,991.28 is: 158,687.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,479.12 : 290,460.12 = 114,991.28 : x
  2. Step 2: Convert to fraction form
    210,479.12/290,460.12 = 114,991.28/x
  3. Step 3: Cross multiply
    210,479.12x = 290,460.12 × 114,991.28
  4. Step 4: Simplify right side
    210,479.12x = 33,400,380,987.75
  5. Step 5: Solve for x
    x = 33,400,380,987.75/210,479.12
  6. Step 6: Final answer
    x = 158,687.38

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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.