Home / 209,831.50-289,480.76-146,206.18

Finding the Fourth Proportional to 209,831.50, 289,480.76 and 146,206.18

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Solution

The fourth proportional to 209,831.50, 289,480.76 and 146,206.18 is: 201,704.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,831.50 : 289,480.76 = 146,206.18 : x
  2. Step 2: Convert to fraction form
    209,831.50/289,480.76 = 146,206.18/x
  3. Step 3: Cross multiply
    209,831.50x = 289,480.76 × 146,206.18
  4. Step 4: Simplify right side
    209,831.50x = 42,323,876,103.10
  5. Step 5: Solve for x
    x = 42,323,876,103.10/209,831.50
  6. Step 6: Final answer
    x = 201,704.11

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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.