Home / 380,094,780.72-570,357,850.59-205,215,485.88

Finding the Fourth Proportional to 380,094,780.72, 570,357,850.59 and 205,215,485.88

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Solution

The fourth proportional to 380,094,780.72, 570,357,850.59 and 205,215,485.88 is: 307,939,675.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,094,780.72 : 570,357,850.59 = 205,215,485.88 : x
  2. Step 2: Convert to fraction form
    380,094,780.72/570,357,850.59 = 205,215,485.88/x
  3. Step 3: Cross multiply
    380,094,780.72x = 570,357,850.59 × 205,215,485.88
  4. Step 4: Simplify right side
    380,094,780.72x = 117,046,263,436,438,144
  5. Step 5: Solve for x
    x = 117,046,263,436,438,144/380,094,780.72
  6. Step 6: Final answer
    x = 307,939,675.50

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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.