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Finding the Fourth Proportional to 492,790.10, 680,048.85 and 266,435.60

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Solution

The fourth proportional to 492,790.10, 680,048.85 and 266,435.60 is: 367,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,790.10 : 680,048.85 = 266,435.60 : x
  2. Step 2: Convert to fraction form
    492,790.10/680,048.85 = 266,435.60/x
  3. Step 3: Cross multiply
    492,790.10x = 680,048.85 × 266,435.60
  4. Step 4: Simplify right side
    492,790.10x = 181,189,223,379.06
  5. Step 5: Solve for x
    x = 181,189,223,379.06/492,790.10
  6. Step 6: Final answer
    x = 367,680.32

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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.