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Finding the Fourth Proportional to 340,345.78, 510,579.47 and 115,694.41

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Solution

The fourth proportional to 340,345.78, 510,579.47 and 115,694.41 is: 173,562.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,345.78 : 510,579.47 = 115,694.41 : x
  2. Step 2: Convert to fraction form
    340,345.78/510,579.47 = 115,694.41/x
  3. Step 3: Cross multiply
    340,345.78x = 510,579.47 × 115,694.41
  4. Step 4: Simplify right side
    340,345.78x = 59,071,190,539.76
  5. Step 5: Solve for x
    x = 59,071,190,539.76/340,345.78
  6. Step 6: Final answer
    x = 173,562.28

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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.