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Finding the Fourth Proportional to 258,893,301.80, 388,339,952.70 and 157,303,490.60

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Solution

The fourth proportional to 258,893,301.80, 388,339,952.70 and 157,303,490.60 is: 235,955,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,893,301.80 : 388,339,952.70 = 157,303,490.60 : x
  2. Step 2: Convert to fraction form
    258,893,301.80/388,339,952.70 = 157,303,490.60/x
  3. Step 3: Cross multiply
    258,893,301.80x = 388,339,952.70 × 157,303,490.60
  4. Step 4: Simplify right side
    258,893,301.80x = 61,087,230,099,148,888
  5. Step 5: Solve for x
    x = 61,087,230,099,148,888/258,893,301.80
  6. Step 6: Final answer
    x = 235,955,235.90

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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.