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Finding the Fourth Proportional to 419,967.33, 579,533.99 and 238,655.31

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Solution

The fourth proportional to 419,967.33, 579,533.99 and 238,655.31 is: 329,332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,967.33 : 579,533.99 = 238,655.31 : x
  2. Step 2: Convert to fraction form
    419,967.33/579,533.99 = 238,655.31/x
  3. Step 3: Cross multiply
    419,967.33x = 579,533.99 × 238,655.31
  4. Step 4: Simplify right side
    419,967.33x = 138,308,862,845.71
  5. Step 5: Solve for x
    x = 138,308,862,845.71/419,967.33
  6. Step 6: Final answer
    x = 329,332.43

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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.