Home / 258,917,397.40-388,376,096.10-162,171,515.80

Finding the Fourth Proportional to 258,917,397.40, 388,376,096.10 and 162,171,515.80

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Solution

The fourth proportional to 258,917,397.40, 388,376,096.10 and 162,171,515.80 is: 243,257,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,917,397.40 : 388,376,096.10 = 162,171,515.80 : x
  2. Step 2: Convert to fraction form
    258,917,397.40/388,376,096.10 = 162,171,515.80/x
  3. Step 3: Cross multiply
    258,917,397.40x = 388,376,096.10 × 162,171,515.80
  4. Step 4: Simplify right side
    258,917,397.40x = 62,983,540,205,023,480
  5. Step 5: Solve for x
    x = 62,983,540,205,023,480/258,917,397.40
  6. Step 6: Final answer
    x = 243,257,273.70

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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.