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Finding the Fourth Proportional to 351,587.70, 528,878.16 and 318,704.31

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Solution

The fourth proportional to 351,587.70, 528,878.16 and 318,704.31 is: 479,413.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,587.70 : 528,878.16 = 318,704.31 : x
  2. Step 2: Convert to fraction form
    351,587.70/528,878.16 = 318,704.31/x
  3. Step 3: Cross multiply
    351,587.70x = 528,878.16 × 318,704.31
  4. Step 4: Simplify right side
    351,587.70x = 168,555,749,056.87
  5. Step 5: Solve for x
    x = 168,555,749,056.87/351,587.70
  6. Step 6: Final answer
    x = 479,413.10

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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.