Home / 421,074,941.40-631,654,621.20-144,689,754.60

Finding the Fourth Proportional to 421,074,941.40, 631,654,621.20 and 144,689,754.60

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Solution

The fourth proportional to 421,074,941.40, 631,654,621.20 and 144,689,754.60 is: 217,049,135.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,074,941.40 : 631,654,621.20 = 144,689,754.60 : x
  2. Step 2: Convert to fraction form
    421,074,941.40/631,654,621.20 = 144,689,754.60/x
  3. Step 3: Cross multiply
    421,074,941.40x = 631,654,621.20 × 144,689,754.60
  4. Step 4: Simplify right side
    421,074,941.40x = 91,393,952,133,383,968
  5. Step 5: Solve for x
    x = 91,393,952,133,383,968/421,074,941.40
  6. Step 6: Final answer
    x = 217,049,135.79

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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.