Home / 312,519.72-431,277.02-169,279.42

Finding the Fourth Proportional to 312,519.72, 431,277.02 and 169,279.42

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Solution

The fourth proportional to 312,519.72, 431,277.02 and 169,279.42 is: 233,605.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,519.72 : 431,277.02 = 169,279.42 : x
  2. Step 2: Convert to fraction form
    312,519.72/431,277.02 = 169,279.42/x
  3. Step 3: Cross multiply
    312,519.72x = 431,277.02 × 169,279.42
  4. Step 4: Simplify right side
    312,519.72x = 73,006,323,804.93
  5. Step 5: Solve for x
    x = 73,006,323,804.93/312,519.72
  6. Step 6: Final answer
    x = 233,605.49

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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.