Home / 210,499.12-290,488.44-115,005.79

Finding the Fourth Proportional to 210,499.12, 290,488.44 and 115,005.79

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Solution

The fourth proportional to 210,499.12, 290,488.44 and 115,005.79 is: 158,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,499.12 : 290,488.44 = 115,005.79 : x
  2. Step 2: Convert to fraction form
    210,499.12/290,488.44 = 115,005.79/x
  3. Step 3: Cross multiply
    210,499.12x = 290,488.44 × 115,005.79
  4. Step 4: Simplify right side
    210,499.12x = 33,407,852,528.07
  5. Step 5: Solve for x
    x = 33,407,852,528.07/210,499.12
  6. Step 6: Final answer
    x = 158,707.80

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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.