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Finding the Fourth Proportional to 620,990.93, 931,486.41 and 200,266.80

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Solution

The fourth proportional to 620,990.93, 931,486.41 and 200,266.80 is: 300,400.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,990.93 : 931,486.41 = 200,266.80 : x
  2. Step 2: Convert to fraction form
    620,990.93/931,486.41 = 200,266.80/x
  3. Step 3: Cross multiply
    620,990.93x = 931,486.41 × 200,266.80
  4. Step 4: Simplify right side
    620,990.93x = 186,545,806,377.28
  5. Step 5: Solve for x
    x = 186,545,806,377.28/620,990.93
  6. Step 6: Final answer
    x = 300,400.21

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1.5x scale

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.