Home / 429,918.78-644,884.55-163,694.06

Finding the Fourth Proportional to 429,918.78, 644,884.55 and 163,694.06

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Solution

The fourth proportional to 429,918.78, 644,884.55 and 163,694.06 is: 245,543.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,918.78 : 644,884.55 = 163,694.06 : x
  2. Step 2: Convert to fraction form
    429,918.78/644,884.55 = 163,694.06/x
  3. Step 3: Cross multiply
    429,918.78x = 644,884.55 × 163,694.06
  4. Step 4: Simplify right side
    429,918.78x = 105,563,767,405.59
  5. Step 5: Solve for x
    x = 105,563,767,405.59/429,918.78
  6. Step 6: Final answer
    x = 245,543.51

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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.