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Finding the Fourth Proportional to 530,408.32, 731,908.32 and 300,892.48

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Solution

The fourth proportional to 530,408.32, 731,908.32 and 300,892.48 is: 415,200.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,408.32 : 731,908.32 = 300,892.48 : x
  2. Step 2: Convert to fraction form
    530,408.32/731,908.32 = 300,892.48/x
  3. Step 3: Cross multiply
    530,408.32x = 731,908.32 × 300,892.48
  4. Step 4: Simplify right side
    530,408.32x = 220,225,709,537.43
  5. Step 5: Solve for x
    x = 220,225,709,537.43/530,408.32
  6. Step 6: Final answer
    x = 415,200.33

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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.