Home / 278,176,161.80-383,863,900.20-154,407,095.84

Finding the Fourth Proportional to 278,176,161.80, 383,863,900.20 and 154,407,095.84

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Solution

The fourth proportional to 278,176,161.80, 383,863,900.20 and 154,407,095.84 is: 213,071,133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,176,161.80 : 383,863,900.20 = 154,407,095.84 : x
  2. Step 2: Convert to fraction form
    278,176,161.80/383,863,900.20 = 154,407,095.84/x
  3. Step 3: Cross multiply
    278,176,161.80x = 383,863,900.20 × 154,407,095.84
  4. Step 4: Simplify right side
    278,176,161.80x = 59,271,310,027,697,592
  5. Step 5: Solve for x
    x = 59,271,310,027,697,592/278,176,161.80
  6. Step 6: Final answer
    x = 213,071,133.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.