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Finding the Fourth Proportional to 529,861.01, 731,213.37 and 288,148.77

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Solution

The fourth proportional to 529,861.01, 731,213.37 and 288,148.77 is: 397,648.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,861.01 : 731,213.37 = 288,148.77 : x
  2. Step 2: Convert to fraction form
    529,861.01/731,213.37 = 288,148.77/x
  3. Step 3: Cross multiply
    529,861.01x = 731,213.37 × 288,148.77
  4. Step 4: Simplify right side
    529,861.01x = 210,698,233,173.06
  5. Step 5: Solve for x
    x = 210,698,233,173.06/529,861.01
  6. Step 6: Final answer
    x = 397,648.12

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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.