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Finding the Fourth Proportional to 519,703.09, 779,556.55 and 159,871.45

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Solution

The fourth proportional to 519,703.09, 779,556.55 and 159,871.45 is: 239,807.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,703.09 : 779,556.55 = 159,871.45 : x
  2. Step 2: Convert to fraction form
    519,703.09/779,556.55 = 159,871.45/x
  3. Step 3: Cross multiply
    519,703.09x = 779,556.55 × 159,871.45
  4. Step 4: Simplify right side
    519,703.09x = 124,628,834,038.41
  5. Step 5: Solve for x
    x = 124,628,834,038.41/519,703.09
  6. Step 6: Final answer
    x = 239,807.76

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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.