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Finding the Fourth Proportional to 365,563.85, 503,356.61 and 319,986.77

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Solution

The fourth proportional to 365,563.85, 503,356.61 and 319,986.77 is: 440,600.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,563.85 : 503,356.61 = 319,986.77 : x
  2. Step 2: Convert to fraction form
    365,563.85/503,356.61 = 319,986.77/x
  3. Step 3: Cross multiply
    365,563.85x = 503,356.61 × 319,986.77
  4. Step 4: Simplify right side
    365,563.85x = 161,067,454,075.23
  5. Step 5: Solve for x
    x = 161,067,454,075.23/365,563.85
  6. Step 6: Final answer
    x = 440,600.07

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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.