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Finding the Fourth Proportional to 254,015.22, 380,784.40 and 85,417.62

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Solution

The fourth proportional to 254,015.22, 380,784.40 and 85,417.62 is: 128,046.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,015.22 : 380,784.40 = 85,417.62 : x
  2. Step 2: Convert to fraction form
    254,015.22/380,784.40 = 85,417.62/x
  3. Step 3: Cross multiply
    254,015.22x = 380,784.40 × 85,417.62
  4. Step 4: Simplify right side
    254,015.22x = 32,525,697,181.13
  5. Step 5: Solve for x
    x = 32,525,697,181.13/254,015.22
  6. Step 6: Final answer
    x = 128,046.25

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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.