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Finding the Fourth Proportional to 519,503.51, 779,337.29 and 219,985.97

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Solution

The fourth proportional to 519,503.51, 779,337.29 and 219,985.97 is: 330,013.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,503.51 : 779,337.29 = 219,985.97 : x
  2. Step 2: Convert to fraction form
    519,503.51/779,337.29 = 219,985.97/x
  3. Step 3: Cross multiply
    519,503.51x = 779,337.29 × 219,985.97
  4. Step 4: Simplify right side
    519,503.51x = 171,443,266,351.10
  5. Step 5: Solve for x
    x = 171,443,266,351.10/519,503.51
  6. Step 6: Final answer
    x = 330,013.68

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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.