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Finding the Fourth Proportional to 384,260.79, 530,277.84 and 223,155.43

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Solution

The fourth proportional to 384,260.79, 530,277.84 and 223,155.43 is: 307,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,260.79 : 530,277.84 = 223,155.43 : x
  2. Step 2: Convert to fraction form
    384,260.79/530,277.84 = 223,155.43/x
  3. Step 3: Cross multiply
    384,260.79x = 530,277.84 × 223,155.43
  4. Step 4: Simplify right side
    384,260.79x = 118,334,379,404.67
  5. Step 5: Solve for x
    x = 118,334,379,404.67/384,260.79
  6. Step 6: Final answer
    x = 307,953.30

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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.