Home / 380,438.72-525,004.96-210,672.64

Finding the Fourth Proportional to 380,438.72, 525,004.96 and 210,672.64

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Solution

The fourth proportional to 380,438.72, 525,004.96 and 210,672.64 is: 290,727.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,438.72 : 525,004.96 = 210,672.64 : x
  2. Step 2: Convert to fraction form
    380,438.72/525,004.96 = 210,672.64/x
  3. Step 3: Cross multiply
    380,438.72x = 525,004.96 × 210,672.64
  4. Step 4: Simplify right side
    380,438.72x = 110,604,180,936.29
  5. Step 5: Solve for x
    x = 110,604,180,936.29/380,438.72
  6. Step 6: Final answer
    x = 290,727.98

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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.