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Finding the Fourth Proportional to 434,054.20, 650,862.60 and 256,615.60

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Solution

The fourth proportional to 434,054.20, 650,862.60 and 256,615.60 is: 384,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,054.20 : 650,862.60 = 256,615.60 : x
  2. Step 2: Convert to fraction form
    434,054.20/650,862.60 = 256,615.60/x
  3. Step 3: Cross multiply
    434,054.20x = 650,862.60 × 256,615.60
  4. Step 4: Simplify right side
    434,054.20x = 167,021,496,616.56
  5. Step 5: Solve for x
    x = 167,021,496,616.56/434,054.20
  6. Step 6: Final answer
    x = 384,794.10

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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.