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Finding the Fourth Proportional to 388,033.62, 535,028.40 and 265,585.05

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Solution

The fourth proportional to 388,033.62, 535,028.40 and 265,585.05 is: 366,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,033.62 : 535,028.40 = 265,585.05 : x
  2. Step 2: Convert to fraction form
    388,033.62/535,028.40 = 265,585.05/x
  3. Step 3: Cross multiply
    388,033.62x = 535,028.40 × 265,585.05
  4. Step 4: Simplify right side
    388,033.62x = 142,095,544,365.42
  5. Step 5: Solve for x
    x = 142,095,544,365.42/388,033.62
  6. Step 6: Final answer
    x = 366,193.90

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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.