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Finding the Fourth Proportional to 383,986.10, 575,979.15 and 265,790.90

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Solution

The fourth proportional to 383,986.10, 575,979.15 and 265,790.90 is: 398,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,986.10 : 575,979.15 = 265,790.90 : x
  2. Step 2: Convert to fraction form
    383,986.10/575,979.15 = 265,790.90/x
  3. Step 3: Cross multiply
    383,986.10x = 575,979.15 × 265,790.90
  4. Step 4: Simplify right side
    383,986.10x = 153,090,016,659.74
  5. Step 5: Solve for x
    x = 153,090,016,659.74/383,986.10
  6. Step 6: Final answer
    x = 398,686.35

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Similar ratio
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1.5x scale

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.