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Finding the Fourth Proportional to 489,812.72, 733,041.48 and 340,221.68

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Solution

The fourth proportional to 489,812.72, 733,041.48 and 340,221.68 is: 509,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,812.72 : 733,041.48 = 340,221.68 : x
  2. Step 2: Convert to fraction form
    489,812.72/733,041.48 = 340,221.68/x
  3. Step 3: Cross multiply
    489,812.72x = 733,041.48 × 340,221.68
  4. Step 4: Simplify right side
    489,812.72x = 249,396,603,835.29
  5. Step 5: Solve for x
    x = 249,396,603,835.29/489,812.72
  6. Step 6: Final answer
    x = 509,167.27

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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.