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Finding the Fourth Proportional to 519,975.89, 717,500.73 and 305,037.53

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Solution

The fourth proportional to 519,975.89, 717,500.73 and 305,037.53 is: 420,913.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,975.89 : 717,500.73 = 305,037.53 : x
  2. Step 2: Convert to fraction form
    519,975.89/717,500.73 = 305,037.53/x
  3. Step 3: Cross multiply
    519,975.89x = 717,500.73 × 305,037.53
  4. Step 4: Simplify right side
    519,975.89x = 218,864,650,699.41
  5. Step 5: Solve for x
    x = 218,864,650,699.41/519,975.89
  6. Step 6: Final answer
    x = 420,913.08

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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.