Home / 254,019.22-380,790.40-85,421.62

Finding the Fourth Proportional to 254,019.22, 380,790.40 and 85,421.62

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Solution

The fourth proportional to 254,019.22, 380,790.40 and 85,421.62 is: 128,052.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,019.22 : 380,790.40 = 85,421.62 : x
  2. Step 2: Convert to fraction form
    254,019.22/380,790.40 = 85,421.62/x
  3. Step 3: Cross multiply
    254,019.22x = 380,790.40 × 85,421.62
  4. Step 4: Simplify right side
    254,019.22x = 32,527,732,848.45
  5. Step 5: Solve for x
    x = 32,527,732,848.45/254,019.22
  6. Step 6: Final answer
    x = 128,052.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.