Home / 429,020.35-643,382.90-162,856.98

Finding the Fourth Proportional to 429,020.35, 643,382.90 and 162,856.98

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Solution

The fourth proportional to 429,020.35, 643,382.90 and 162,856.98 is: 244,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,020.35 : 643,382.90 = 162,856.98 : x
  2. Step 2: Convert to fraction form
    429,020.35/643,382.90 = 162,856.98/x
  3. Step 3: Cross multiply
    429,020.35x = 643,382.90 × 162,856.98
  4. Step 4: Simplify right side
    429,020.35x = 104,779,395,874.07
  5. Step 5: Solve for x
    x = 104,779,395,874.07/429,020.35
  6. Step 6: Final answer
    x = 244,229.43

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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.