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Finding the Fourth Proportional to 517,431.70, 776,276.75 and 180,477.19

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Solution

The fourth proportional to 517,431.70, 776,276.75 and 180,477.19 is: 270,760.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,431.70 : 776,276.75 = 180,477.19 : x
  2. Step 2: Convert to fraction form
    517,431.70/776,276.75 = 180,477.19/x
  3. Step 3: Cross multiply
    517,431.70x = 776,276.75 × 180,477.19
  4. Step 4: Simplify right side
    517,431.70x = 140,100,246,502.33
  5. Step 5: Solve for x
    x = 140,100,246,502.33/517,431.70
  6. Step 6: Final answer
    x = 270,760.85

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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.