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Finding the Fourth Proportional to 219,367.49, 329,051.30 and 79,126.11

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Solution

The fourth proportional to 219,367.49, 329,051.30 and 79,126.11 is: 118,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,367.49 : 329,051.30 = 79,126.11 : x
  2. Step 2: Convert to fraction form
    219,367.49/329,051.30 = 79,126.11/x
  3. Step 3: Cross multiply
    219,367.49x = 329,051.30 × 79,126.11
  4. Step 4: Simplify right side
    219,367.49x = 26,036,548,963.81
  5. Step 5: Solve for x
    x = 26,036,548,963.81/219,367.49
  6. Step 6: Final answer
    x = 118,689.19

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1.5x scale

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.