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Finding the Fourth Proportional to 343,705.39, 515,552.41 and 141,260.47

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Solution

The fourth proportional to 343,705.39, 515,552.41 and 141,260.47 is: 211,888.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,705.39 : 515,552.41 = 141,260.47 : x
  2. Step 2: Convert to fraction form
    343,705.39/515,552.41 = 141,260.47/x
  3. Step 3: Cross multiply
    343,705.39x = 515,552.41 × 141,260.47
  4. Step 4: Simplify right side
    343,705.39x = 72,827,175,746.23
  5. Step 5: Solve for x
    x = 72,827,175,746.23/343,705.39
  6. Step 6: Final answer
    x = 211,888.37

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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.