Home / 218,907,432.80-328,144,573.20-103,689,461.60

Finding the Fourth Proportional to 218,907,432.80, 328,144,573.20 and 103,689,461.60

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Solution

The fourth proportional to 218,907,432.80, 328,144,573.20 and 103,689,461.60 is: 155,431,607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,907,432.80 : 328,144,573.20 = 103,689,461.60 : x
  2. Step 2: Convert to fraction form
    218,907,432.80/328,144,573.20 = 103,689,461.60/x
  3. Step 3: Cross multiply
    218,907,432.80x = 328,144,573.20 × 103,689,461.60
  4. Step 4: Simplify right side
    218,907,432.80x = 34,025,134,122,069,784
  5. Step 5: Solve for x
    x = 34,025,134,122,069,784/218,907,432.80
  6. Step 6: Final answer
    x = 155,431,607.26

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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.