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Finding the Fourth Proportional to 384,671.68, 530,313.12 and 331,522.72

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Solution

The fourth proportional to 384,671.68, 530,313.12 and 331,522.72 is: 457,041.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,671.68 : 530,313.12 = 331,522.72 : x
  2. Step 2: Convert to fraction form
    384,671.68/530,313.12 = 331,522.72/x
  3. Step 3: Cross multiply
    384,671.68x = 530,313.12 × 331,522.72
  4. Step 4: Simplify right side
    384,671.68x = 175,810,847,994.09
  5. Step 5: Solve for x
    x = 175,810,847,994.09/384,671.68
  6. Step 6: Final answer
    x = 457,041.31

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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.