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Finding the Fourth Proportional to 219,411.32, 329,048.94 and 79,151.72

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Solution

The fourth proportional to 219,411.32, 329,048.94 and 79,151.72 is: 118,703.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,411.32 : 329,048.94 = 79,151.72 : x
  2. Step 2: Convert to fraction form
    219,411.32/329,048.94 = 79,151.72/x
  3. Step 3: Cross multiply
    219,411.32x = 329,048.94 × 79,151.72
  4. Step 4: Simplify right side
    219,411.32x = 26,044,789,565.18
  5. Step 5: Solve for x
    x = 26,044,789,565.18/219,411.32
  6. Step 6: Final answer
    x = 118,703.03

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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.