Home / 210,609.69-290,641.52-115,116.38

Finding the Fourth Proportional to 210,609.69, 290,641.52 and 115,116.38

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Solution

The fourth proportional to 210,609.69, 290,641.52 and 115,116.38 is: 158,860.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,609.69 : 290,641.52 = 115,116.38 : x
  2. Step 2: Convert to fraction form
    210,609.69/290,641.52 = 115,116.38/x
  3. Step 3: Cross multiply
    210,609.69x = 290,641.52 × 115,116.38
  4. Step 4: Simplify right side
    210,609.69x = 33,457,601,219.45
  5. Step 5: Solve for x
    x = 33,457,601,219.45/210,609.69
  6. Step 6: Final answer
    x = 158,860.70

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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.