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Finding the Fourth Proportional to 379,283.66, 569,008.65 and 142,626.27

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Solution

The fourth proportional to 379,283.66, 569,008.65 and 142,626.27 is: 213,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,283.66 : 569,008.65 = 142,626.27 : x
  2. Step 2: Convert to fraction form
    379,283.66/569,008.65 = 142,626.27/x
  3. Step 3: Cross multiply
    379,283.66x = 569,008.65 × 142,626.27
  4. Step 4: Simplify right side
    379,283.66x = 81,155,580,012.93
  5. Step 5: Solve for x
    x = 81,155,580,012.93/379,283.66
  6. Step 6: Final answer
    x = 213,970.67

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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.