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Finding the Fourth Proportional to 528,211.22, 728,918.24 and 295,634.70

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Solution

The fourth proportional to 528,211.22, 728,918.24 and 295,634.70 is: 407,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,211.22 : 728,918.24 = 295,634.70 : x
  2. Step 2: Convert to fraction form
    528,211.22/728,918.24 = 295,634.70/x
  3. Step 3: Cross multiply
    528,211.22x = 728,918.24 × 295,634.70
  4. Step 4: Simplify right side
    528,211.22x = 215,493,523,728.76
  5. Step 5: Solve for x
    x = 215,493,523,728.76/528,211.22
  6. Step 6: Final answer
    x = 407,968.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.