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Finding the Fourth Proportional to 265,568.76, 398,470.82 and 139,178.93

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Solution

The fourth proportional to 265,568.76, 398,470.82 and 139,178.93 is: 208,830.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,568.76 : 398,470.82 = 139,178.93 : x
  2. Step 2: Convert to fraction form
    265,568.76/398,470.82 = 139,178.93/x
  3. Step 3: Cross multiply
    265,568.76x = 398,470.82 × 139,178.93
  4. Step 4: Simplify right side
    265,568.76x = 55,458,739,675.57
  5. Step 5: Solve for x
    x = 55,458,739,675.57/265,568.76
  6. Step 6: Final answer
    x = 208,830.06

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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.