Home / 312,647.24-431,453.60-169,407.16

Finding the Fourth Proportional to 312,647.24, 431,453.60 and 169,407.16

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Solution

The fourth proportional to 312,647.24, 431,453.60 and 169,407.16 is: 233,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,647.24 : 431,453.60 = 169,407.16 : x
  2. Step 2: Convert to fraction form
    312,647.24/431,453.60 = 169,407.16/x
  3. Step 3: Cross multiply
    312,647.24x = 431,453.60 × 169,407.16
  4. Step 4: Simplify right side
    312,647.24x = 73,091,329,047.78
  5. Step 5: Solve for x
    x = 73,091,329,047.78/312,647.24
  6. Step 6: Final answer
    x = 233,782.10

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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.