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Finding the Fourth Proportional to 492,134.36, 679,145.28 and 265,779.92

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Solution

The fourth proportional to 492,134.36, 679,145.28 and 265,779.92 is: 366,776.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,134.36 : 679,145.28 = 265,779.92 : x
  2. Step 2: Convert to fraction form
    492,134.36/679,145.28 = 265,779.92/x
  3. Step 3: Cross multiply
    492,134.36x = 679,145.28 × 265,779.92
  4. Step 4: Simplify right side
    492,134.36x = 180,503,178,186.78
  5. Step 5: Solve for x
    x = 180,503,178,186.78/492,134.36
  6. Step 6: Final answer
    x = 366,776.22

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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.