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Finding the Fourth Proportional to 487,069.12, 730,662.24 and 171,460.48

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Solution

The fourth proportional to 487,069.12, 730,662.24 and 171,460.48 is: 257,211.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,069.12 : 730,662.24 = 171,460.48 : x
  2. Step 2: Convert to fraction form
    487,069.12/730,662.24 = 171,460.48/x
  3. Step 3: Cross multiply
    487,069.12x = 730,662.24 × 171,460.48
  4. Step 4: Simplify right side
    487,069.12x = 125,279,698,388.28
  5. Step 5: Solve for x
    x = 125,279,698,388.28/487,069.12
  6. Step 6: Final answer
    x = 257,211.33

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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.