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Finding the Fourth Proportional to 388,992.10, 583,506.39 and 189,074.18

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Solution

The fourth proportional to 388,992.10, 583,506.39 and 189,074.18 is: 283,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,992.10 : 583,506.39 = 189,074.18 : x
  2. Step 2: Convert to fraction form
    388,992.10/583,506.39 = 189,074.18/x
  3. Step 3: Cross multiply
    388,992.10x = 583,506.39 × 189,074.18
  4. Step 4: Simplify right side
    388,992.10x = 110,325,992,214.01
  5. Step 5: Solve for x
    x = 110,325,992,214.01/388,992.10
  6. Step 6: Final answer
    x = 283,620.14

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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.