Home / 291,421.48-402,199.94-164,121.96

Finding the Fourth Proportional to 291,421.48, 402,199.94 and 164,121.96

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Solution

The fourth proportional to 291,421.48, 402,199.94 and 164,121.96 is: 226,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,421.48 : 402,199.94 = 164,121.96 : x
  2. Step 2: Convert to fraction form
    291,421.48/402,199.94 = 164,121.96/x
  3. Step 3: Cross multiply
    291,421.48x = 402,199.94 × 164,121.96
  4. Step 4: Simplify right side
    291,421.48x = 66,009,842,464.68
  5. Step 5: Solve for x
    x = 66,009,842,464.68/291,421.48
  6. Step 6: Final answer
    x = 226,509.87

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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.