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Finding the Fourth Proportional to 256,867.60, 385,301.40 and 157,334.80

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Solution

The fourth proportional to 256,867.60, 385,301.40 and 157,334.80 is: 236,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,867.60 : 385,301.40 = 157,334.80 : x
  2. Step 2: Convert to fraction form
    256,867.60/385,301.40 = 157,334.80/x
  3. Step 3: Cross multiply
    256,867.60x = 385,301.40 × 157,334.80
  4. Step 4: Simplify right side
    256,867.60x = 60,621,318,708.72
  5. Step 5: Solve for x
    x = 60,621,318,708.72/256,867.60
  6. Step 6: Final answer
    x = 236,002.20

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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.