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Finding the Fourth Proportional to 352,068.40, 528,102.60 and 115,418.80

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Solution

The fourth proportional to 352,068.40, 528,102.60 and 115,418.80 is: 173,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,068.40 : 528,102.60 = 115,418.80 : x
  2. Step 2: Convert to fraction form
    352,068.40/528,102.60 = 115,418.80/x
  3. Step 3: Cross multiply
    352,068.40x = 528,102.60 × 115,418.80
  4. Step 4: Simplify right side
    352,068.40x = 60,952,968,368.88
  5. Step 5: Solve for x
    x = 60,952,968,368.88/352,068.40
  6. Step 6: Final answer
    x = 173,128.20

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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.