Home / 256,411.06-384,616.86-66,871.24

Finding the Fourth Proportional to 256,411.06, 384,616.86 and 66,871.24

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Solution

The fourth proportional to 256,411.06, 384,616.86 and 66,871.24 is: 100,306.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,411.06 : 384,616.86 = 66,871.24 : x
  2. Step 2: Convert to fraction form
    256,411.06/384,616.86 = 66,871.24/x
  3. Step 3: Cross multiply
    256,411.06x = 384,616.86 × 66,871.24
  4. Step 4: Simplify right side
    256,411.06x = 25,719,806,353.11
  5. Step 5: Solve for x
    x = 25,719,806,353.11/256,411.06
  6. Step 6: Final answer
    x = 100,306.93

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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.