Home / 209,920.27-289,730.42-145,564.15

Finding the Fourth Proportional to 209,920.27, 289,730.42 and 145,564.15

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Solution

The fourth proportional to 209,920.27, 289,730.42 and 145,564.15 is: 200,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,920.27 : 289,730.42 = 145,564.15 : x
  2. Step 2: Convert to fraction form
    209,920.27/289,730.42 = 145,564.15/x
  3. Step 3: Cross multiply
    209,920.27x = 289,730.42 × 145,564.15
  4. Step 4: Simplify right side
    209,920.27x = 42,174,362,316.44
  5. Step 5: Solve for x
    x = 42,174,362,316.44/209,920.27
  6. Step 6: Final answer
    x = 200,906.57

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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.