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Finding the Fourth Proportional to 258,694,580.10, 388,041,870.15 and 258,694,580.10

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Solution

The fourth proportional to 258,694,580.10, 388,041,870.15 and 258,694,580.10 is: 388,041,870.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,694,580.10 : 388,041,870.15 = 258,694,580.10 : x
  2. Step 2: Convert to fraction form
    258,694,580.10/388,041,870.15 = 258,694,580.10/x
  3. Step 3: Cross multiply
    258,694,580.10x = 388,041,870.15 × 258,694,580.10
  4. Step 4: Simplify right side
    258,694,580.10x = 100,384,328,659,672,960
  5. Step 5: Solve for x
    x = 100,384,328,659,672,960/258,694,580.10
  6. Step 6: Final answer
    x = 388,041,870.15

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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.