Home / 211,536.48-291,933.92-139,790.72

Finding the Fourth Proportional to 211,536.48, 291,933.92 and 139,790.72

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Solution

The fourth proportional to 211,536.48, 291,933.92 and 139,790.72 is: 192,920.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,536.48 : 291,933.92 = 139,790.72 : x
  2. Step 2: Convert to fraction form
    211,536.48/291,933.92 = 139,790.72/x
  3. Step 3: Cross multiply
    211,536.48x = 291,933.92 × 139,790.72
  4. Step 4: Simplify right side
    211,536.48x = 40,809,652,869.22
  5. Step 5: Solve for x
    x = 40,809,652,869.22/211,536.48
  6. Step 6: Final answer
    x = 192,920.17

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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.