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Finding the Fourth Proportional to 256,246.60, 384,369.90 and 98,480.20

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Solution

The fourth proportional to 256,246.60, 384,369.90 and 98,480.20 is: 147,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,246.60 : 384,369.90 = 98,480.20 : x
  2. Step 2: Convert to fraction form
    256,246.60/384,369.90 = 98,480.20/x
  3. Step 3: Cross multiply
    256,246.60x = 384,369.90 × 98,480.20
  4. Step 4: Simplify right side
    256,246.60x = 37,852,824,625.98
  5. Step 5: Solve for x
    x = 37,852,824,625.98/256,246.60
  6. Step 6: Final answer
    x = 147,720.30

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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.