Home / 429,789.23-644,705.25-163,570.38

Finding the Fourth Proportional to 429,789.23, 644,705.25 and 163,570.38

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Solution

The fourth proportional to 429,789.23, 644,705.25 and 163,570.38 is: 245,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,789.23 : 644,705.25 = 163,570.38 : x
  2. Step 2: Convert to fraction form
    429,789.23/644,705.25 = 163,570.38/x
  3. Step 3: Cross multiply
    429,789.23x = 644,705.25 × 163,570.38
  4. Step 4: Simplify right side
    429,789.23x = 105,454,682,730.50
  5. Step 5: Solve for x
    x = 105,454,682,730.50/429,789.23
  6. Step 6: Final answer
    x = 245,363.72

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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.