Home / 210,999.74-291,180.42-115,515.32

Finding the Fourth Proportional to 210,999.74, 291,180.42 and 115,515.32

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Solution

The fourth proportional to 210,999.74, 291,180.42 and 115,515.32 is: 159,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,999.74 : 291,180.42 = 115,515.32 : x
  2. Step 2: Convert to fraction form
    210,999.74/291,180.42 = 115,515.32/x
  3. Step 3: Cross multiply
    210,999.74x = 291,180.42 × 115,515.32
  4. Step 4: Simplify right side
    210,999.74x = 33,635,797,938.13
  5. Step 5: Solve for x
    x = 33,635,797,938.13/210,999.74
  6. Step 6: Final answer
    x = 159,411.56

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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.