Home / 209,516.06-289,081.74-123,478.47

Finding the Fourth Proportional to 209,516.06, 289,081.74 and 123,478.47

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Solution

The fourth proportional to 209,516.06, 289,081.74 and 123,478.47 is: 170,370.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,516.06 : 289,081.74 = 123,478.47 : x
  2. Step 2: Convert to fraction form
    209,516.06/289,081.74 = 123,478.47/x
  3. Step 3: Cross multiply
    209,516.06x = 289,081.74 × 123,478.47
  4. Step 4: Simplify right side
    209,516.06x = 35,695,371,423.18
  5. Step 5: Solve for x
    x = 35,695,371,423.18/209,516.06
  6. Step 6: Final answer
    x = 170,370.57

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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.