Home / 429,979.77-644,748.48-193,119.21

Finding the Fourth Proportional to 429,979.77, 644,748.48 and 193,119.21

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Solution

The fourth proportional to 429,979.77, 644,748.48 and 193,119.21 is: 289,579.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,979.77 : 644,748.48 = 193,119.21 : x
  2. Step 2: Convert to fraction form
    429,979.77/644,748.48 = 193,119.21/x
  3. Step 3: Cross multiply
    429,979.77x = 644,748.48 × 193,119.21
  4. Step 4: Simplify right side
    429,979.77x = 124,513,317,106.30
  5. Step 5: Solve for x
    x = 124,513,317,106.30/429,979.77
  6. Step 6: Final answer
    x = 289,579.48

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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.