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Finding the Fourth Proportional to 487,046.79, 730,643.09 and 171,448.11

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Solution

The fourth proportional to 487,046.79, 730,643.09 and 171,448.11 is: 257,197.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,046.79 : 730,643.09 = 171,448.11 : x
  2. Step 2: Convert to fraction form
    487,046.79/730,643.09 = 171,448.11/x
  3. Step 3: Cross multiply
    487,046.79x = 730,643.09 × 171,448.11
  4. Step 4: Simplify right side
    487,046.79x = 125,267,376,007.82
  5. Step 5: Solve for x
    x = 125,267,376,007.82/487,046.79
  6. Step 6: Final answer
    x = 257,197.83

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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.