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Finding the Fourth Proportional to 429,858.88, 644,815.68 and 240,317.44

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Solution

The fourth proportional to 429,858.88, 644,815.68 and 240,317.44 is: 360,491.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,858.88 : 644,815.68 = 240,317.44 : x
  2. Step 2: Convert to fraction form
    429,858.88/644,815.68 = 240,317.44/x
  3. Step 3: Cross multiply
    429,858.88x = 644,815.68 × 240,317.44
  4. Step 4: Simplify right side
    429,858.88x = 154,960,453,489.46
  5. Step 5: Solve for x
    x = 154,960,453,489.46/429,858.88
  6. Step 6: Final answer
    x = 360,491.46

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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.