Home / 428,634.81-642,502.08-144,226.62

Finding the Fourth Proportional to 428,634.81, 642,502.08 and 144,226.62

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Solution

The fourth proportional to 428,634.81, 642,502.08 and 144,226.62 is: 216,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,634.81 : 642,502.08 = 144,226.62 : x
  2. Step 2: Convert to fraction form
    428,634.81/642,502.08 = 144,226.62/x
  3. Step 3: Cross multiply
    428,634.81x = 642,502.08 × 144,226.62
  4. Step 4: Simplify right side
    428,634.81x = 92,665,903,341.37
  5. Step 5: Solve for x
    x = 92,665,903,341.37/428,634.81
  6. Step 6: Final answer
    x = 216,188.47

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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.