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Finding the Fourth Proportional to 388,533.87, 535,961.70 and 323,450.55

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Solution

The fourth proportional to 388,533.87, 535,961.70 and 323,450.55 is: 446,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,533.87 : 535,961.70 = 323,450.55 : x
  2. Step 2: Convert to fraction form
    388,533.87/535,961.70 = 323,450.55/x
  3. Step 3: Cross multiply
    388,533.87x = 535,961.70 × 323,450.55
  4. Step 4: Simplify right side
    388,533.87x = 173,357,106,643.94
  5. Step 5: Solve for x
    x = 173,357,106,643.94/388,533.87
  6. Step 6: Final answer
    x = 446,182.74

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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.