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Finding the Fourth Proportional to 429,860.80, 644,920.80 and 230,276.80

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Solution

The fourth proportional to 429,860.80, 644,920.80 and 230,276.80 is: 345,484.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,860.80 : 644,920.80 = 230,276.80 : x
  2. Step 2: Convert to fraction form
    429,860.80/644,920.80 = 230,276.80/x
  3. Step 3: Cross multiply
    429,860.80x = 644,920.80 × 230,276.80
  4. Step 4: Simplify right side
    429,860.80x = 148,510,298,077.44
  5. Step 5: Solve for x
    x = 148,510,298,077.44/429,860.80
  6. Step 6: Final answer
    x = 345,484.63

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1.5x scale

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.