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Finding the Fourth Proportional to 318,990.63, 478,485.95 and 94,333.56

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Solution

The fourth proportional to 318,990.63, 478,485.95 and 94,333.56 is: 141,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,990.63 : 478,485.95 = 94,333.56 : x
  2. Step 2: Convert to fraction form
    318,990.63/478,485.95 = 94,333.56/x
  3. Step 3: Cross multiply
    318,990.63x = 478,485.95 × 94,333.56
  4. Step 4: Simplify right side
    318,990.63x = 45,137,284,844.42
  5. Step 5: Solve for x
    x = 45,137,284,844.42/318,990.63
  6. Step 6: Final answer
    x = 141,500.35

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Similar ratio
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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.