Home / 420,030,806.60-629,857,253.10-161,159,990.60

Finding the Fourth Proportional to 420,030,806.60, 629,857,253.10 and 161,159,990.60

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Solution

The fourth proportional to 420,030,806.60, 629,857,253.10 and 161,159,990.60 is: 241,667,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,030,806.60 : 629,857,253.10 = 161,159,990.60 : x
  2. Step 2: Convert to fraction form
    420,030,806.60/629,857,253.10 = 161,159,990.60/x
  3. Step 3: Cross multiply
    420,030,806.60x = 629,857,253.10 × 161,159,990.60
  4. Step 4: Simplify right side
    420,030,806.60x = 101,507,788,988,937,824
  5. Step 5: Solve for x
    x = 101,507,788,988,937,824/420,030,806.60
  6. Step 6: Final answer
    x = 241,667,485.80

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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.