Home / 380,734.92-525,417.30-210,971.88

Finding the Fourth Proportional to 380,734.92, 525,417.30 and 210,971.88

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Solution

The fourth proportional to 380,734.92, 525,417.30 and 210,971.88 is: 291,142.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,734.92 : 525,417.30 = 210,971.88 : x
  2. Step 2: Convert to fraction form
    380,734.92/525,417.30 = 210,971.88/x
  3. Step 3: Cross multiply
    380,734.92x = 525,417.30 × 210,971.88
  4. Step 4: Simplify right side
    380,734.92x = 110,848,275,565.52
  5. Step 5: Solve for x
    x = 110,848,275,565.52/380,734.92
  6. Step 6: Final answer
    x = 291,142.92

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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.