Home / 380,621.43-525,289.59-210,871.35

Finding the Fourth Proportional to 380,621.43, 525,289.59 and 210,871.35

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Solution

The fourth proportional to 380,621.43, 525,289.59 and 210,871.35 is: 291,020.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,621.43 : 525,289.59 = 210,871.35 : x
  2. Step 2: Convert to fraction form
    380,621.43/525,289.59 = 210,871.35/x
  3. Step 3: Cross multiply
    380,621.43x = 525,289.59 × 210,871.35
  4. Step 4: Simplify right side
    380,621.43x = 110,768,524,984.25
  5. Step 5: Solve for x
    x = 110,768,524,984.25/380,621.43
  6. Step 6: Final answer
    x = 291,020.20

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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.