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Finding the Fourth Proportional to 429,048.80, 643,365.84 and 251,613.44

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Solution

The fourth proportional to 429,048.80, 643,365.84 and 251,613.44 is: 377,298.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,048.80 : 643,365.84 = 251,613.44 : x
  2. Step 2: Convert to fraction form
    429,048.80/643,365.84 = 251,613.44/x
  3. Step 3: Cross multiply
    429,048.80x = 643,365.84 × 251,613.44
  4. Step 4: Simplify right side
    429,048.80x = 161,879,492,180.89
  5. Step 5: Solve for x
    x = 161,879,492,180.89/429,048.80
  6. Step 6: Final answer
    x = 377,298.55

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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.