Home / 428,270.32-642,206.04-191,614.96

Finding the Fourth Proportional to 428,270.32, 642,206.04 and 191,614.96

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Solution

The fourth proportional to 428,270.32, 642,206.04 and 191,614.96 is: 287,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,270.32 : 642,206.04 = 191,614.96 : x
  2. Step 2: Convert to fraction form
    428,270.32/642,206.04 = 191,614.96/x
  3. Step 3: Cross multiply
    428,270.32x = 642,206.04 × 191,614.96
  4. Step 4: Simplify right side
    428,270.32x = 123,056,284,666.36
  5. Step 5: Solve for x
    x = 123,056,284,666.36/428,270.32
  6. Step 6: Final answer
    x = 287,333.21

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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.