Home / 256,218.14-384,321.90-85,452.16

Finding the Fourth Proportional to 256,218.14, 384,321.90 and 85,452.16

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Solution

The fourth proportional to 256,218.14, 384,321.90 and 85,452.16 is: 128,176.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,218.14 : 384,321.90 = 85,452.16 : x
  2. Step 2: Convert to fraction form
    256,218.14/384,321.90 = 85,452.16/x
  3. Step 3: Cross multiply
    256,218.14x = 384,321.90 × 85,452.16
  4. Step 4: Simplify right side
    256,218.14x = 32,841,136,490.30
  5. Step 5: Solve for x
    x = 32,841,136,490.30/256,218.14
  6. Step 6: Final answer
    x = 128,176.47

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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.