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Finding the Fourth Proportional to 256,316.40, 384,359.40 and 98,492.40

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Solution

The fourth proportional to 256,316.40, 384,359.40 and 98,492.40 is: 147,694.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,316.40 : 384,359.40 = 98,492.40 : x
  2. Step 2: Convert to fraction form
    256,316.40/384,359.40 = 98,492.40/x
  3. Step 3: Cross multiply
    256,316.40x = 384,359.40 × 98,492.40
  4. Step 4: Simplify right side
    256,316.40x = 37,856,479,768.56
  5. Step 5: Solve for x
    x = 37,856,479,768.56/256,316.40
  6. Step 6: Final answer
    x = 147,694.33

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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.