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Finding the Fourth Proportional to 255,679.34, 352,838.19 and 153,763.18

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Solution

The fourth proportional to 255,679.34, 352,838.19 and 153,763.18 is: 212,193.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,679.34 : 352,838.19 = 153,763.18 : x
  2. Step 2: Convert to fraction form
    255,679.34/352,838.19 = 153,763.18/x
  3. Step 3: Cross multiply
    255,679.34x = 352,838.19 × 153,763.18
  4. Step 4: Simplify right side
    255,679.34x = 54,253,521,814.36
  5. Step 5: Solve for x
    x = 54,253,521,814.36/255,679.34
  6. Step 6: Final answer
    x = 212,193.61

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1.5x scale

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.