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Finding the Fourth Proportional to 384,672.69, 530,503.02 and 320,354.37

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Solution

The fourth proportional to 384,672.69, 530,503.02 and 320,354.37 is: 441,801.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,672.69 : 530,503.02 = 320,354.37 : x
  2. Step 2: Convert to fraction form
    384,672.69/530,503.02 = 320,354.37/x
  3. Step 3: Cross multiply
    384,672.69x = 530,503.02 × 320,354.37
  4. Step 4: Simplify right side
    384,672.69x = 169,948,960,755.20
  5. Step 5: Solve for x
    x = 169,948,960,755.20/384,672.69
  6. Step 6: Final answer
    x = 441,801.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.