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Finding the Fourth Proportional to 255,391.80, 352,443.09 and 140,670.87

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Solution

The fourth proportional to 255,391.80, 352,443.09 and 140,670.87 is: 194,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,391.80 : 352,443.09 = 140,670.87 : x
  2. Step 2: Convert to fraction form
    255,391.80/352,443.09 = 140,670.87/x
  3. Step 3: Cross multiply
    255,391.80x = 352,443.09 × 140,670.87
  4. Step 4: Simplify right side
    255,391.80x = 49,578,476,095.79
  5. Step 5: Solve for x
    x = 49,578,476,095.79/255,391.80
  6. Step 6: Final answer
    x = 194,127.13

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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.