Home / 211,399.03-291,744.17-139,653.28

Finding the Fourth Proportional to 211,399.03, 291,744.17 and 139,653.28

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Solution

The fourth proportional to 211,399.03, 291,744.17 and 139,653.28 is: 192,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,399.03 : 291,744.17 = 139,653.28 : x
  2. Step 2: Convert to fraction form
    211,399.03/291,744.17 = 139,653.28/x
  3. Step 3: Cross multiply
    211,399.03x = 291,744.17 × 139,653.28
  4. Step 4: Simplify right side
    211,399.03x = 40,743,030,261.38
  5. Step 5: Solve for x
    x = 40,743,030,261.38/211,399.03
  6. Step 6: Final answer
    x = 192,730.45

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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.