Home / 253,821.60-380,904.64-135,577.76

Finding the Fourth Proportional to 253,821.60, 380,904.64 and 135,577.76

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Solution

The fourth proportional to 253,821.60, 380,904.64 and 135,577.76 is: 203,458.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,821.60 : 380,904.64 = 135,577.76 : x
  2. Step 2: Convert to fraction form
    253,821.60/380,904.64 = 135,577.76/x
  3. Step 3: Cross multiply
    253,821.60x = 380,904.64 × 135,577.76
  4. Step 4: Simplify right side
    253,821.60x = 51,642,197,864.81
  5. Step 5: Solve for x
    x = 51,642,197,864.81/253,821.60
  6. Step 6: Final answer
    x = 203,458.64

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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.