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Finding the Fourth Proportional to 219,187.63, 328,490.79 and 112,567.29

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Solution

The fourth proportional to 219,187.63, 328,490.79 and 112,567.29 is: 168,701.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,187.63 : 328,490.79 = 112,567.29 : x
  2. Step 2: Convert to fraction form
    219,187.63/328,490.79 = 112,567.29/x
  3. Step 3: Cross multiply
    219,187.63x = 328,490.79 × 112,567.29
  4. Step 4: Simplify right side
    219,187.63x = 36,977,316,377.81
  5. Step 5: Solve for x
    x = 36,977,316,377.81/219,187.63
  6. Step 6: Final answer
    x = 168,701.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.