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Finding the Fourth Proportional to 489,343,013.80, 734,014,520.70 and 166,226,885.80

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Solution

The fourth proportional to 489,343,013.80, 734,014,520.70 and 166,226,885.80 is: 249,340,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,343,013.80 : 734,014,520.70 = 166,226,885.80 : x
  2. Step 2: Convert to fraction form
    489,343,013.80/734,014,520.70 = 166,226,885.80/x
  3. Step 3: Cross multiply
    489,343,013.80x = 734,014,520.70 × 166,226,885.80
  4. Step 4: Simplify right side
    489,343,013.80x = 122,012,947,907,940,656
  5. Step 5: Solve for x
    x = 122,012,947,907,940,656/489,343,013.80
  6. Step 6: Final answer
    x = 249,340,328.70

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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.