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Finding the Fourth Proportional to 265,802.88, 398,705.78 and 66,123.27

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Solution

The fourth proportional to 265,802.88, 398,705.78 and 66,123.27 is: 99,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,802.88 : 398,705.78 = 66,123.27 : x
  2. Step 2: Convert to fraction form
    265,802.88/398,705.78 = 66,123.27/x
  3. Step 3: Cross multiply
    265,802.88x = 398,705.78 × 66,123.27
  4. Step 4: Simplify right side
    265,802.88x = 26,363,729,734.87
  5. Step 5: Solve for x
    x = 26,363,729,734.87/265,802.88
  6. Step 6: Final answer
    x = 99,185.27

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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.