Home / 286,839.81-430,243.20-109,364.76

Finding the Fourth Proportional to 286,839.81, 430,243.20 and 109,364.76

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Solution

The fourth proportional to 286,839.81, 430,243.20 and 109,364.76 is: 164,040.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,839.81 : 430,243.20 = 109,364.76 : x
  2. Step 2: Convert to fraction form
    286,839.81/430,243.20 = 109,364.76/x
  3. Step 3: Cross multiply
    286,839.81x = 430,243.20 × 109,364.76
  4. Step 4: Simplify right side
    286,839.81x = 47,053,444,309.63
  5. Step 5: Solve for x
    x = 47,053,444,309.63/286,839.81
  6. Step 6: Final answer
    x = 164,040.84

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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.