Home / 211,239-291,509.82-115,749.45

Finding the Fourth Proportional to 211,239, 291,509.82 and 115,749.45

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Solution

The fourth proportional to 211,239, 291,509.82 and 115,749.45 is: 159,734.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,239 : 291,509.82 = 115,749.45 : x
  2. Step 2: Convert to fraction form
    211,239/291,509.82 = 115,749.45/x
  3. Step 3: Cross multiply
    211,239x = 291,509.82 × 115,749.45
  4. Step 4: Simplify right side
    211,239x = 33,742,101,334.60
  5. Step 5: Solve for x
    x = 33,742,101,334.60/211,239
  6. Step 6: Final answer
    x = 159,734.24

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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.