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Finding the Fourth Proportional to 318,991.54, 478,580.88 and 94,357.90

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Solution

The fourth proportional to 318,991.54, 478,580.88 and 94,357.90 is: 141,564.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,991.54 : 478,580.88 = 94,357.90 : x
  2. Step 2: Convert to fraction form
    318,991.54/478,580.88 = 94,357.90/x
  3. Step 3: Cross multiply
    318,991.54x = 478,580.88 × 94,357.90
  4. Step 4: Simplify right side
    318,991.54x = 45,157,886,816.95
  5. Step 5: Solve for x
    x = 45,157,886,816.95/318,991.54
  6. Step 6: Final answer
    x = 141,564.53

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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.