Home / 210,890.55-291,030.66-115,398.03

Finding the Fourth Proportional to 210,890.55, 291,030.66 and 115,398.03

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Solution

The fourth proportional to 210,890.55, 291,030.66 and 115,398.03 is: 159,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,890.55 : 291,030.66 = 115,398.03 : x
  2. Step 2: Convert to fraction form
    210,890.55/291,030.66 = 115,398.03/x
  3. Step 3: Cross multiply
    210,890.55x = 291,030.66 × 115,398.03
  4. Step 4: Simplify right side
    210,890.55x = 33,584,364,833.60
  5. Step 5: Solve for x
    x = 33,584,364,833.60/210,890.55
  6. Step 6: Final answer
    x = 159,250.21

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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.