Home / 429,076.40-643,593.69-159,257.07

Finding the Fourth Proportional to 429,076.40, 643,593.69 and 159,257.07

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Solution

The fourth proportional to 429,076.40, 643,593.69 and 159,257.07 is: 238,877.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,076.40 : 643,593.69 = 159,257.07 : x
  2. Step 2: Convert to fraction form
    429,076.40/643,593.69 = 159,257.07/x
  3. Step 3: Cross multiply
    429,076.40x = 643,593.69 × 159,257.07
  4. Step 4: Simplify right side
    429,076.40x = 102,496,845,339.89
  5. Step 5: Solve for x
    x = 102,496,845,339.89/429,076.40
  6. Step 6: Final answer
    x = 238,877.85

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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.