Home / 380,416.15-524,990.12-210,650.27

Finding the Fourth Proportional to 380,416.15, 524,990.12 and 210,650.27

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Solution

The fourth proportional to 380,416.15, 524,990.12 and 210,650.27 is: 290,706.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,416.15 : 524,990.12 = 210,650.27 : x
  2. Step 2: Convert to fraction form
    380,416.15/524,990.12 = 210,650.27/x
  3. Step 3: Cross multiply
    380,416.15x = 524,990.12 × 210,650.27
  4. Step 4: Simplify right side
    380,416.15x = 110,589,310,784.56
  5. Step 5: Solve for x
    x = 110,589,310,784.56/380,416.15
  6. Step 6: Final answer
    x = 290,706.14

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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.