Home / 368,923.12-509,114.90-213,904.51

Finding the Fourth Proportional to 368,923.12, 509,114.90 and 213,904.51

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Solution

The fourth proportional to 368,923.12, 509,114.90 and 213,904.51 is: 295,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,923.12 : 509,114.90 = 213,904.51 : x
  2. Step 2: Convert to fraction form
    368,923.12/509,114.90 = 213,904.51/x
  3. Step 3: Cross multiply
    368,923.12x = 509,114.90 × 213,904.51
  4. Step 4: Simplify right side
    368,923.12x = 108,901,972,480.17
  5. Step 5: Solve for x
    x = 108,901,972,480.17/368,923.12
  6. Step 6: Final answer
    x = 295,188.80

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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.