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Finding the Fourth Proportional to 256,608,239.40, 384,912,359.10 and 256,608,239.40

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Solution

The fourth proportional to 256,608,239.40, 384,912,359.10 and 256,608,239.40 is: 384,912,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,608,239.40 : 384,912,359.10 = 256,608,239.40 : x
  2. Step 2: Convert to fraction form
    256,608,239.40/384,912,359.10 = 256,608,239.40/x
  3. Step 3: Cross multiply
    256,608,239.40x = 384,912,359.10 × 256,608,239.40
  4. Step 4: Simplify right side
    256,608,239.40x = 98,771,682,791,951,584
  5. Step 5: Solve for x
    x = 98,771,682,791,951,584/256,608,239.40
  6. Step 6: Final answer
    x = 384,912,359.10

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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.