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Finding the Fourth Proportional to 505,861.98, 758,417.77 and 306,134.89

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Solution

The fourth proportional to 505,861.98, 758,417.77 and 306,134.89 is: 458,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,861.98 : 758,417.77 = 306,134.89 : x
  2. Step 2: Convert to fraction form
    505,861.98/758,417.77 = 306,134.89/x
  3. Step 3: Cross multiply
    505,861.98x = 758,417.77 × 306,134.89
  4. Step 4: Simplify right side
    505,861.98x = 232,178,142,915.22
  5. Step 5: Solve for x
    x = 232,178,142,915.22/505,861.98
  6. Step 6: Final answer
    x = 458,975.27

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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.