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Finding the Fourth Proportional to 403,701.30, 557,108.31 and 219,938.96

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Solution

The fourth proportional to 403,701.30, 557,108.31 and 219,938.96 is: 303,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,701.30 : 557,108.31 = 219,938.96 : x
  2. Step 2: Convert to fraction form
    403,701.30/557,108.31 = 219,938.96/x
  3. Step 3: Cross multiply
    403,701.30x = 557,108.31 × 219,938.96
  4. Step 4: Simplify right side
    403,701.30x = 122,529,822,308.76
  5. Step 5: Solve for x
    x = 122,529,822,308.76/403,701.30
  6. Step 6: Final answer
    x = 303,516.05

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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.