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Finding the Fourth Proportional to 258,977,817.90, 388,466,726.85 and 258,977,817.90

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Solution

The fourth proportional to 258,977,817.90, 388,466,726.85 and 258,977,817.90 is: 388,466,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,977,817.90 : 388,466,726.85 = 258,977,817.90 : x
  2. Step 2: Convert to fraction form
    258,977,817.90/388,466,726.85 = 258,977,817.90/x
  3. Step 3: Cross multiply
    258,977,817.90x = 388,466,726.85 × 258,977,817.90
  4. Step 4: Simplify right side
    258,977,817.90x = 100,604,265,246,368,352
  5. Step 5: Solve for x
    x = 100,604,265,246,368,352/258,977,817.90
  6. Step 6: Final answer
    x = 388,466,726.85

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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.