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Finding the Fourth Proportional to 352,647.60, 528,625.80 and 315,322.80

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Solution

The fourth proportional to 352,647.60, 528,625.80 and 315,322.80 is: 472,675.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,647.60 : 528,625.80 = 315,322.80 : x
  2. Step 2: Convert to fraction form
    352,647.60/528,625.80 = 315,322.80/x
  3. Step 3: Cross multiply
    352,647.60x = 528,625.80 × 315,322.80
  4. Step 4: Simplify right side
    352,647.60x = 166,687,767,408.24
  5. Step 5: Solve for x
    x = 166,687,767,408.24/352,647.60
  6. Step 6: Final answer
    x = 472,675.18

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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.