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Finding the Fourth Proportional to 258,893,281.80, 388,339,922.70 and 67,417,057.80

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Solution

The fourth proportional to 258,893,281.80, 388,339,922.70 and 67,417,057.80 is: 101,125,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,893,281.80 : 388,339,922.70 = 67,417,057.80 : x
  2. Step 2: Convert to fraction form
    258,893,281.80/388,339,922.70 = 67,417,057.80/x
  3. Step 3: Cross multiply
    258,893,281.80x = 388,339,922.70 × 67,417,057.80
  4. Step 4: Simplify right side
    258,893,281.80x = 26,180,735,014,713,432
  5. Step 5: Solve for x
    x = 26,180,735,014,713,432/258,893,281.80
  6. Step 6: Final answer
    x = 101,125,586.70

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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.