Home / 211,428.33-291,779.52-115,938.45

Finding the Fourth Proportional to 211,428.33, 291,779.52 and 115,938.45

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Solution

The fourth proportional to 211,428.33, 291,779.52 and 115,938.45 is: 159,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,428.33 : 291,779.52 = 115,938.45 : x
  2. Step 2: Convert to fraction form
    211,428.33/291,779.52 = 115,938.45/x
  3. Step 3: Cross multiply
    211,428.33x = 291,779.52 × 115,938.45
  4. Step 4: Simplify right side
    211,428.33x = 33,828,465,290.54
  5. Step 5: Solve for x
    x = 33,828,465,290.54/211,428.33
  6. Step 6: Final answer
    x = 159,999.68

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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.