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Finding the Fourth Proportional to 489,983.99, 735,166.13 and 190,674.81

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Solution

The fourth proportional to 489,983.99, 735,166.13 and 190,674.81 is: 286,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,983.99 : 735,166.13 = 190,674.81 : x
  2. Step 2: Convert to fraction form
    489,983.99/735,166.13 = 190,674.81/x
  3. Step 3: Cross multiply
    489,983.99x = 735,166.13 × 190,674.81
  4. Step 4: Simplify right side
    489,983.99x = 140,177,661,202.81
  5. Step 5: Solve for x
    x = 140,177,661,202.81/489,983.99
  6. Step 6: Final answer
    x = 286,086.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.