Home / 210,646.86-290,690.80-115,153.26

Finding the Fourth Proportional to 210,646.86, 290,690.80 and 115,153.26

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Solution

The fourth proportional to 210,646.86, 290,690.80 and 115,153.26 is: 158,910.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,646.86 : 290,690.80 = 115,153.26 : x
  2. Step 2: Convert to fraction form
    210,646.86/290,690.80 = 115,153.26/x
  3. Step 3: Cross multiply
    210,646.86x = 290,690.80 × 115,153.26
  4. Step 4: Simplify right side
    210,646.86x = 33,473,993,272.01
  5. Step 5: Solve for x
    x = 33,473,993,272.01/210,646.86
  6. Step 6: Final answer
    x = 158,910.48

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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.