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Finding the Fourth Proportional to 256,603.74, 384,906.09 and 98,906.46

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Solution

The fourth proportional to 256,603.74, 384,906.09 and 98,906.46 is: 148,359.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,603.74 : 384,906.09 = 98,906.46 : x
  2. Step 2: Convert to fraction form
    256,603.74/384,906.09 = 98,906.46/x
  3. Step 3: Cross multiply
    256,603.74x = 384,906.09 × 98,906.46
  4. Step 4: Simplify right side
    256,603.74x = 38,069,698,794.34
  5. Step 5: Solve for x
    x = 38,069,698,794.34/256,603.74
  6. Step 6: Final answer
    x = 148,359.88

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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.