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Finding the Fourth Proportional to 369,085.37, 509,337.81 and 199,319.49

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Solution

The fourth proportional to 369,085.37, 509,337.81 and 199,319.49 is: 275,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,085.37 : 509,337.81 = 199,319.49 : x
  2. Step 2: Convert to fraction form
    369,085.37/509,337.81 = 199,319.49/x
  3. Step 3: Cross multiply
    369,085.37x = 509,337.81 × 199,319.49
  4. Step 4: Simplify right side
    369,085.37x = 101,520,952,526.92
  5. Step 5: Solve for x
    x = 101,520,952,526.92/369,085.37
  6. Step 6: Final answer
    x = 275,060.90

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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.