Home / 211,054.40-291,255-115,561.04

Finding the Fourth Proportional to 211,054.40, 291,255 and 115,561.04

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Solution

The fourth proportional to 211,054.40, 291,255 and 115,561.04 is: 159,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,054.40 : 291,255 = 115,561.04 : x
  2. Step 2: Convert to fraction form
    211,054.40/291,255 = 115,561.04/x
  3. Step 3: Cross multiply
    211,054.40x = 291,255 × 115,561.04
  4. Step 4: Simplify right side
    211,054.40x = 33,657,730,705.20
  5. Step 5: Solve for x
    x = 33,657,730,705.20/211,054.40
  6. Step 6: Final answer
    x = 159,474.20

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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.