Home / 279,847,756.72-386,191,245.72-154,399,946.32

Finding the Fourth Proportional to 279,847,756.72, 386,191,245.72 and 154,399,946.32

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Solution

The fourth proportional to 279,847,756.72, 386,191,245.72 and 154,399,946.32 is: 213,072,666.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,847,756.72 : 386,191,245.72 = 154,399,946.32 : x
  2. Step 2: Convert to fraction form
    279,847,756.72/386,191,245.72 = 154,399,946.32/x
  3. Step 3: Cross multiply
    279,847,756.72x = 386,191,245.72 × 154,399,946.32
  4. Step 4: Simplify right side
    279,847,756.72x = 59,627,907,608,421,928
  5. Step 5: Solve for x
    x = 59,627,907,608,421,928/279,847,756.72
  6. Step 6: Final answer
    x = 213,072,666.04

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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.