Home / 211,031.55-291,225.24-115,539.03

Finding the Fourth Proportional to 211,031.55, 291,225.24 and 115,539.03

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Solution

The fourth proportional to 211,031.55, 291,225.24 and 115,539.03 is: 159,444.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,031.55 : 291,225.24 = 115,539.03 : x
  2. Step 2: Convert to fraction form
    211,031.55/291,225.24 = 115,539.03/x
  3. Step 3: Cross multiply
    211,031.55x = 291,225.24 × 115,539.03
  4. Step 4: Simplify right side
    211,031.55x = 33,647,881,741.12
  5. Step 5: Solve for x
    x = 33,647,881,741.12/211,031.55
  6. Step 6: Final answer
    x = 159,444.79

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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.