Home / 380,738.16-525,389.76-210,968.64

Finding the Fourth Proportional to 380,738.16, 525,389.76 and 210,968.64

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Solution

The fourth proportional to 380,738.16, 525,389.76 and 210,968.64 is: 291,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,738.16 : 525,389.76 = 210,968.64 : x
  2. Step 2: Convert to fraction form
    380,738.16/525,389.76 = 210,968.64/x
  3. Step 3: Cross multiply
    380,738.16x = 525,389.76 × 210,968.64
  4. Step 4: Simplify right side
    380,738.16x = 110,840,763,137.13
  5. Step 5: Solve for x
    x = 110,840,763,137.13/380,738.16
  6. Step 6: Final answer
    x = 291,120.71

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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.