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Finding the Fourth Proportional to 219,386.60, 329,011.80 and 79,127

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Solution

The fourth proportional to 219,386.60, 329,011.80 and 79,127 is: 118,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,386.60 : 329,011.80 = 79,127 : x
  2. Step 2: Convert to fraction form
    219,386.60/329,011.80 = 79,127/x
  3. Step 3: Cross multiply
    219,386.60x = 329,011.80 × 79,127
  4. Step 4: Simplify right side
    219,386.60x = 26,033,716,698.60
  5. Step 5: Solve for x
    x = 26,033,716,698.60/219,386.60
  6. Step 6: Final answer
    x = 118,665.94

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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.