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Finding the Fourth Proportional to 519,139.80, 779,147.10 and 235,267.20

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Solution

The fourth proportional to 519,139.80, 779,147.10 and 235,267.20 is: 353,099.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,139.80 : 779,147.10 = 235,267.20 : x
  2. Step 2: Convert to fraction form
    519,139.80/779,147.10 = 235,267.20/x
  3. Step 3: Cross multiply
    519,139.80x = 779,147.10 × 235,267.20
  4. Step 4: Simplify right side
    519,139.80x = 183,307,756,605.12
  5. Step 5: Solve for x
    x = 183,307,756,605.12/519,139.80
  6. Step 6: Final answer
    x = 353,099.02

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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.