Home / 429,634.72-643,470.94-205,153.18

Finding the Fourth Proportional to 429,634.72, 643,470.94 and 205,153.18

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Solution

The fourth proportional to 429,634.72, 643,470.94 and 205,153.18 is: 307,261.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,634.72 : 643,470.94 = 205,153.18 : x
  2. Step 2: Convert to fraction form
    429,634.72/643,470.94 = 205,153.18/x
  3. Step 3: Cross multiply
    429,634.72x = 643,470.94 × 205,153.18
  4. Step 4: Simplify right side
    429,634.72x = 132,010,105,335.47
  5. Step 5: Solve for x
    x = 132,010,105,335.47/429,634.72
  6. Step 6: Final answer
    x = 307,261.26

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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.