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Finding the Fourth Proportional to 388,873.56, 536,186.40 and 266,424.66

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Solution

The fourth proportional to 388,873.56, 536,186.40 and 266,424.66 is: 367,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,873.56 : 536,186.40 = 266,424.66 : x
  2. Step 2: Convert to fraction form
    388,873.56/536,186.40 = 266,424.66/x
  3. Step 3: Cross multiply
    388,873.56x = 536,186.40 × 266,424.66
  4. Step 4: Simplify right side
    388,873.56x = 142,853,279,316.62
  5. Step 5: Solve for x
    x = 142,853,279,316.62/388,873.56
  6. Step 6: Final answer
    x = 367,351.48

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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.