Home / 312,439.09-431,166.36-169,199.38

Finding the Fourth Proportional to 312,439.09, 431,166.36 and 169,199.38

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Solution

The fourth proportional to 312,439.09, 431,166.36 and 169,199.38 is: 233,495.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,439.09 : 431,166.36 = 169,199.38 : x
  2. Step 2: Convert to fraction form
    312,439.09/431,166.36 = 169,199.38/x
  3. Step 3: Cross multiply
    312,439.09x = 431,166.36 × 169,199.38
  4. Step 4: Simplify right side
    312,439.09x = 72,953,080,788.86
  5. Step 5: Solve for x
    x = 72,953,080,788.86/312,439.09
  6. Step 6: Final answer
    x = 233,495.37

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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.