Home / 286,439.05-428,783.78-223,453.45

Finding the Fourth Proportional to 286,439.05, 428,783.78 and 223,453.45

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Solution

The fourth proportional to 286,439.05, 428,783.78 and 223,453.45 is: 334,497.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,439.05 : 428,783.78 = 223,453.45 : x
  2. Step 2: Convert to fraction form
    286,439.05/428,783.78 = 223,453.45/x
  3. Step 3: Cross multiply
    286,439.05x = 428,783.78 × 223,453.45
  4. Step 4: Simplify right side
    286,439.05x = 95,813,213,827.77
  5. Step 5: Solve for x
    x = 95,813,213,827.77/286,439.05
  6. Step 6: Final answer
    x = 334,497.74

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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.