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Finding the Fourth Proportional to 378,775.81, 524,968.01 and 371,689.93

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Solution

The fourth proportional to 378,775.81, 524,968.01 and 371,689.93 is: 515,147.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,775.81 : 524,968.01 = 371,689.93 : x
  2. Step 2: Convert to fraction form
    378,775.81/524,968.01 = 371,689.93/x
  3. Step 3: Cross multiply
    378,775.81x = 524,968.01 × 371,689.93
  4. Step 4: Simplify right side
    378,775.81x = 195,125,322,889.14
  5. Step 5: Solve for x
    x = 195,125,322,889.14/378,775.81
  6. Step 6: Final answer
    x = 515,147.27

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.