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Finding the Fourth Proportional to 492,115.32, 679,119.12 and 265,760.80

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Solution

The fourth proportional to 492,115.32, 679,119.12 and 265,760.80 is: 366,749.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,115.32 : 679,119.12 = 265,760.80 : x
  2. Step 2: Convert to fraction form
    492,115.32/679,119.12 = 265,760.80/x
  3. Step 3: Cross multiply
    492,115.32x = 679,119.12 × 265,760.80
  4. Step 4: Simplify right side
    492,115.32x = 180,483,240,626.50
  5. Step 5: Solve for x
    x = 180,483,240,626.50/492,115.32
  6. Step 6: Final answer
    x = 366,749.89

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1.5x scale

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.