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Finding the Fourth Proportional to 312,765.02, 431,605.23 and 185,364.98

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Solution

The fourth proportional to 312,765.02, 431,605.23 and 185,364.98 is: 255,797.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,765.02 : 431,605.23 = 185,364.98 : x
  2. Step 2: Convert to fraction form
    312,765.02/431,605.23 = 185,364.98/x
  3. Step 3: Cross multiply
    312,765.02x = 431,605.23 × 185,364.98
  4. Step 4: Simplify right side
    312,765.02x = 80,004,494,826.85
  5. Step 5: Solve for x
    x = 80,004,494,826.85/312,765.02
  6. Step 6: Final answer
    x = 255,797.45

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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.