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Finding the Fourth Proportional to 519,969.51, 779,998.41 and 145,992.51

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Solution

The fourth proportional to 519,969.51, 779,998.41 and 145,992.51 is: 219,001.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,969.51 : 779,998.41 = 145,992.51 : x
  2. Step 2: Convert to fraction form
    519,969.51/779,998.41 = 145,992.51/x
  3. Step 3: Cross multiply
    519,969.51x = 779,998.41 × 145,992.51
  4. Step 4: Simplify right side
    519,969.51x = 113,873,925,671.91
  5. Step 5: Solve for x
    x = 113,873,925,671.91/519,969.51
  6. Step 6: Final answer
    x = 219,001.16

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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.