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Finding the Fourth Proportional to 264,718.40, 397,077.60 and 140,302.40

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Solution

The fourth proportional to 264,718.40, 397,077.60 and 140,302.40 is: 210,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,718.40 : 397,077.60 = 140,302.40 : x
  2. Step 2: Convert to fraction form
    264,718.40/397,077.60 = 140,302.40/x
  3. Step 3: Cross multiply
    264,718.40x = 397,077.60 × 140,302.40
  4. Step 4: Simplify right side
    264,718.40x = 55,710,940,266.24
  5. Step 5: Solve for x
    x = 55,710,940,266.24/264,718.40
  6. Step 6: Final answer
    x = 210,453.60

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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.