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Finding the Fourth Proportional to 529,879.52, 731,223.60 and 291,415.52

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Solution

The fourth proportional to 529,879.52, 731,223.60 and 291,415.52 is: 402,147.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,879.52 : 731,223.60 = 291,415.52 : x
  2. Step 2: Convert to fraction form
    529,879.52/731,223.60 = 291,415.52/x
  3. Step 3: Cross multiply
    529,879.52x = 731,223.60 × 291,415.52
  4. Step 4: Simplify right side
    529,879.52x = 213,089,905,630.27
  5. Step 5: Solve for x
    x = 213,089,905,630.27/529,879.52
  6. Step 6: Final answer
    x = 402,147.84

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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.