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Finding the Fourth Proportional to 272,846.70, 409,314.85 and 85,813.10

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Solution

The fourth proportional to 272,846.70, 409,314.85 and 85,813.10 is: 128,733.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,846.70 : 409,314.85 = 85,813.10 : x
  2. Step 2: Convert to fraction form
    272,846.70/409,314.85 = 85,813.10/x
  3. Step 3: Cross multiply
    272,846.70x = 409,314.85 × 85,813.10
  4. Step 4: Simplify right side
    272,846.70x = 35,124,576,154.54
  5. Step 5: Solve for x
    x = 35,124,576,154.54/272,846.70
  6. Step 6: Final answer
    x = 128,733.74

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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.