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Finding the Fourth Proportional to 264,539.40, 396,809.10 and 140,123.40

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Solution

The fourth proportional to 264,539.40, 396,809.10 and 140,123.40 is: 210,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,539.40 : 396,809.10 = 140,123.40 : x
  2. Step 2: Convert to fraction form
    264,539.40/396,809.10 = 140,123.40/x
  3. Step 3: Cross multiply
    264,539.40x = 396,809.10 × 140,123.40
  4. Step 4: Simplify right side
    264,539.40x = 55,602,240,242.94
  5. Step 5: Solve for x
    x = 55,602,240,242.94/264,539.40
  6. Step 6: Final answer
    x = 210,185.10

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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.