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Finding the Fourth Proportional to 318,782.67, 478,061.45 and 94,083

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Solution

The fourth proportional to 318,782.67, 478,061.45 and 94,083 is: 141,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,782.67 : 478,061.45 = 94,083 : x
  2. Step 2: Convert to fraction form
    318,782.67/478,061.45 = 94,083/x
  3. Step 3: Cross multiply
    318,782.67x = 478,061.45 × 94,083
  4. Step 4: Simplify right side
    318,782.67x = 44,977,455,400.35
  5. Step 5: Solve for x
    x = 44,977,455,400.35/318,782.67
  6. Step 6: Final answer
    x = 141,091.28

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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.