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Finding the Fourth Proportional to 487,428.37, 730,963.47 and 167,489.51

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Solution

The fourth proportional to 487,428.37, 730,963.47 and 167,489.51 is: 251,172.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,428.37 : 730,963.47 = 167,489.51 : x
  2. Step 2: Convert to fraction form
    487,428.37/730,963.47 = 167,489.51/x
  3. Step 3: Cross multiply
    487,428.37x = 730,963.47 × 167,489.51
  4. Step 4: Simplify right side
    487,428.37x = 122,428,713,418.20
  5. Step 5: Solve for x
    x = 122,428,713,418.20/487,428.37
  6. Step 6: Final answer
    x = 251,172.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.