Home / 211,128.78-291,362.44-120,482.94

Finding the Fourth Proportional to 211,128.78, 291,362.44 and 120,482.94

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Solution

The fourth proportional to 211,128.78, 291,362.44 and 120,482.94 is: 166,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,128.78 : 291,362.44 = 120,482.94 : x
  2. Step 2: Convert to fraction form
    211,128.78/291,362.44 = 120,482.94/x
  3. Step 3: Cross multiply
    211,128.78x = 291,362.44 × 120,482.94
  4. Step 4: Simplify right side
    211,128.78x = 35,104,203,376.77
  5. Step 5: Solve for x
    x = 35,104,203,376.77/211,128.78
  6. Step 6: Final answer
    x = 166,269.15

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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.