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Finding the Fourth Proportional to 256,730.88, 354,289.44 and 143,580.48

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Solution

The fourth proportional to 256,730.88, 354,289.44 and 143,580.48 is: 198,141.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,730.88 : 354,289.44 = 143,580.48 : x
  2. Step 2: Convert to fraction form
    256,730.88/354,289.44 = 143,580.48/x
  3. Step 3: Cross multiply
    256,730.88x = 354,289.44 × 143,580.48
  4. Step 4: Simplify right side
    256,730.88x = 50,869,047,854.13
  5. Step 5: Solve for x
    x = 50,869,047,854.13/256,730.88
  6. Step 6: Final answer
    x = 198,141.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.