Home / 256,208.14-384,306.90-85,442.16

Finding the Fourth Proportional to 256,208.14, 384,306.90 and 85,442.16

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Solution

The fourth proportional to 256,208.14, 384,306.90 and 85,442.16 is: 128,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,208.14 : 384,306.90 = 85,442.16 : x
  2. Step 2: Convert to fraction form
    256,208.14/384,306.90 = 85,442.16/x
  3. Step 3: Cross multiply
    256,208.14x = 384,306.90 × 85,442.16
  4. Step 4: Simplify right side
    256,208.14x = 32,836,011,638.90
  5. Step 5: Solve for x
    x = 32,836,011,638.90/256,208.14
  6. Step 6: Final answer
    x = 128,161.47

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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.