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Finding the Fourth Proportional to 371,993.64, 513,391.36 and 210,831.39

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Solution

The fourth proportional to 371,993.64, 513,391.36 and 210,831.39 is: 290,970.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,993.64 : 513,391.36 = 210,831.39 : x
  2. Step 2: Convert to fraction form
    371,993.64/513,391.36 = 210,831.39/x
  3. Step 3: Cross multiply
    371,993.64x = 513,391.36 × 210,831.39
  4. Step 4: Simplify right side
    371,993.64x = 108,239,015,460.82
  5. Step 5: Solve for x
    x = 108,239,015,460.82/371,993.64
  6. Step 6: Final answer
    x = 290,970.07

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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.