Home / 257,286,146,146.43-385,915,252,903.65-78,198,170,055.52

Finding the Fourth Proportional to 257,286,146,146.43, 385,915,252,903.65 and 78,198,170,055.52

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Solution

The fourth proportional to 257,286,146,146.43, 385,915,252,903.65 and 78,198,170,055.52 is: 117,293,010,236.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,286,146,146.43 : 385,915,252,903.65 = 78,198,170,055.52 : x
  2. Step 2: Convert to fraction form
    257,286,146,146.43/385,915,252,903.65 = 78,198,170,055.52/x
  3. Step 3: Cross multiply
    257,286,146,146.43x = 385,915,252,903.65 × 78,198,170,055.52
  4. Step 4: Simplify right side
    257,286,146,146.43x = 30,177,866,573,578,636,361,728
  5. Step 5: Solve for x
    x = 30,177,866,573,578,636,361,728/257,286,146,146.43
  6. Step 6: Final answer
    x = 117,293,010,236.17

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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.