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Finding the Fourth Proportional to 351,533.25, 528,796.62 and 318,650.39

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Solution

The fourth proportional to 351,533.25, 528,796.62 and 318,650.39 is: 479,332.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,533.25 : 528,796.62 = 318,650.39 : x
  2. Step 2: Convert to fraction form
    351,533.25/528,796.62 = 318,650.39/x
  3. Step 3: Cross multiply
    351,533.25x = 528,796.62 × 318,650.39
  4. Step 4: Simplify right side
    351,533.25x = 168,501,248,532.69
  5. Step 5: Solve for x
    x = 168,501,248,532.69/351,533.25
  6. Step 6: Final answer
    x = 479,332.32

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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.