Home / 218,907,856.80-328,145,209.20-103,689,885.60

Finding the Fourth Proportional to 218,907,856.80, 328,145,209.20 and 103,689,885.60

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Solution

The fourth proportional to 218,907,856.80, 328,145,209.20 and 103,689,885.60 is: 155,432,243.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,907,856.80 : 328,145,209.20 = 103,689,885.60 : x
  2. Step 2: Convert to fraction form
    218,907,856.80/328,145,209.20 = 103,689,885.60/x
  3. Step 3: Cross multiply
    218,907,856.80x = 328,145,209.20 × 103,689,885.60
  4. Step 4: Simplify right side
    218,907,856.80x = 34,025,339,202,136,064
  5. Step 5: Solve for x
    x = 34,025,339,202,136,064/218,907,856.80
  6. Step 6: Final answer
    x = 155,432,243.04

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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.