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Finding the Fourth Proportional to 219,124.29, 302,385.37 and 123,639.87

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Solution

The fourth proportional to 219,124.29, 302,385.37 and 123,639.87 is: 170,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,124.29 : 302,385.37 = 123,639.87 : x
  2. Step 2: Convert to fraction form
    219,124.29/302,385.37 = 123,639.87/x
  3. Step 3: Cross multiply
    219,124.29x = 302,385.37 × 123,639.87
  4. Step 4: Simplify right side
    219,124.29x = 37,386,887,836.70
  5. Step 5: Solve for x
    x = 37,386,887,836.70/219,124.29
  6. Step 6: Final answer
    x = 170,619.55

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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.