Home / 290,890,338.89-436,323,301.80-135,390,660.77

Finding the Fourth Proportional to 290,890,338.89, 436,323,301.80 and 135,390,660.77

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Solution

The fourth proportional to 290,890,338.89, 436,323,301.80 and 135,390,660.77 is: 203,080,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,890,338.89 : 436,323,301.80 = 135,390,660.77 : x
  2. Step 2: Convert to fraction form
    290,890,338.89/436,323,301.80 = 135,390,660.77/x
  3. Step 3: Cross multiply
    290,890,338.89x = 436,323,301.80 × 135,390,660.77
  4. Step 4: Simplify right side
    290,890,338.89x = 59,074,100,139,996,904
  5. Step 5: Solve for x
    x = 59,074,100,139,996,904/290,890,338.89
  6. Step 6: Final answer
    x = 203,080,309.80

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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.