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Finding the Fourth Proportional to 389,988.87, 585,019.01 and 109,504.23

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Solution

The fourth proportional to 389,988.87, 585,019.01 and 109,504.23 is: 164,266.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,988.87 : 585,019.01 = 109,504.23 : x
  2. Step 2: Convert to fraction form
    389,988.87/585,019.01 = 109,504.23/x
  3. Step 3: Cross multiply
    389,988.87x = 585,019.01 × 109,504.23
  4. Step 4: Simplify right side
    389,988.87x = 64,062,055,677.89
  5. Step 5: Solve for x
    x = 64,062,055,677.89/389,988.87
  6. Step 6: Final answer
    x = 164,266.37

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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.