Home / 428,794.16-643,217.96-144,461.07

Finding the Fourth Proportional to 428,794.16, 643,217.96 and 144,461.07

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Solution

The fourth proportional to 428,794.16, 643,217.96 and 144,461.07 is: 216,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,794.16 : 643,217.96 = 144,461.07 : x
  2. Step 2: Convert to fraction form
    428,794.16/643,217.96 = 144,461.07/x
  3. Step 3: Cross multiply
    428,794.16x = 643,217.96 × 144,461.07
  4. Step 4: Simplify right side
    428,794.16x = 92,919,955,105.97
  5. Step 5: Solve for x
    x = 92,919,955,105.97/428,794.16
  6. Step 6: Final answer
    x = 216,700.61

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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.