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Finding the Fourth Proportional to 331,258.40, 496,887.60 and 314,928.80

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Solution

The fourth proportional to 331,258.40, 496,887.60 and 314,928.80 is: 472,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,258.40 : 496,887.60 = 314,928.80 : x
  2. Step 2: Convert to fraction form
    331,258.40/496,887.60 = 314,928.80/x
  3. Step 3: Cross multiply
    331,258.40x = 496,887.60 × 314,928.80
  4. Step 4: Simplify right side
    331,258.40x = 156,484,215,602.88
  5. Step 5: Solve for x
    x = 156,484,215,602.88/331,258.40
  6. Step 6: Final answer
    x = 472,393.20

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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.