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Finding the Fourth Proportional to 256,088.60, 384,132.90 and 193,880.60

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Solution

The fourth proportional to 256,088.60, 384,132.90 and 193,880.60 is: 290,820.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,088.60 : 384,132.90 = 193,880.60 : x
  2. Step 2: Convert to fraction form
    256,088.60/384,132.90 = 193,880.60/x
  3. Step 3: Cross multiply
    256,088.60x = 384,132.90 × 193,880.60
  4. Step 4: Simplify right side
    256,088.60x = 74,475,917,131.74
  5. Step 5: Solve for x
    x = 74,475,917,131.74/256,088.60
  6. Step 6: Final answer
    x = 290,820.90

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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.