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Finding the Fourth Proportional to 219,663.57, 329,521.33 and 77,479.18

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Solution

The fourth proportional to 219,663.57, 329,521.33 and 77,479.18 is: 116,227.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,663.57 : 329,521.33 = 77,479.18 : x
  2. Step 2: Convert to fraction form
    219,663.57/329,521.33 = 77,479.18/x
  3. Step 3: Cross multiply
    219,663.57x = 329,521.33 × 77,479.18
  4. Step 4: Simplify right side
    219,663.57x = 25,531,043,240.65
  5. Step 5: Solve for x
    x = 25,531,043,240.65/219,663.57
  6. Step 6: Final answer
    x = 116,227.93

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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.