Home / 429,788.23-644,703.75-163,569.38

Finding the Fourth Proportional to 429,788.23, 644,703.75 and 163,569.38

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Solution

The fourth proportional to 429,788.23, 644,703.75 and 163,569.38 is: 245,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,788.23 : 644,703.75 = 163,569.38 : x
  2. Step 2: Convert to fraction form
    429,788.23/644,703.75 = 163,569.38/x
  3. Step 3: Cross multiply
    429,788.23x = 644,703.75 × 163,569.38
  4. Step 4: Simplify right side
    429,788.23x = 105,453,789,447.66
  5. Step 5: Solve for x
    x = 105,453,789,447.66/429,788.23
  6. Step 6: Final answer
    x = 245,362.21

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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.