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Finding the Fourth Proportional to 425,408.09, 587,035.49 and 234,421.49

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Solution

The fourth proportional to 425,408.09, 587,035.49 and 234,421.49 is: 323,486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,408.09 : 587,035.49 = 234,421.49 : x
  2. Step 2: Convert to fraction form
    425,408.09/587,035.49 = 234,421.49/x
  3. Step 3: Cross multiply
    425,408.09x = 587,035.49 × 234,421.49
  4. Step 4: Simplify right side
    425,408.09x = 137,613,734,544.16
  5. Step 5: Solve for x
    x = 137,613,734,544.16/425,408.09
  6. Step 6: Final answer
    x = 323,486.41

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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.