Home / 312,645.10-431,458.26-191,853.12

Finding the Fourth Proportional to 312,645.10, 431,458.26 and 191,853.12

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Solution

The fourth proportional to 312,645.10, 431,458.26 and 191,853.12 is: 264,762.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,645.10 : 431,458.26 = 191,853.12 : x
  2. Step 2: Convert to fraction form
    312,645.10/431,458.26 = 191,853.12/x
  3. Step 3: Cross multiply
    312,645.10x = 431,458.26 × 191,853.12
  4. Step 4: Simplify right side
    312,645.10x = 82,776,613,330.77
  5. Step 5: Solve for x
    x = 82,776,613,330.77/312,645.10
  6. Step 6: Final answer
    x = 264,762.23

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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.