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Finding the Fourth Proportional to 318,999.40, 478,592.55 and 94,365.81

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Solution

The fourth proportional to 318,999.40, 478,592.55 and 94,365.81 is: 141,576.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,999.40 : 478,592.55 = 94,365.81 : x
  2. Step 2: Convert to fraction form
    318,999.40/478,592.55 = 94,365.81/x
  3. Step 3: Cross multiply
    318,999.40x = 478,592.55 × 94,365.81
  4. Step 4: Simplify right side
    318,999.40x = 45,162,773,640.72
  5. Step 5: Solve for x
    x = 45,162,773,640.72/318,999.40
  6. Step 6: Final answer
    x = 141,576.36

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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.