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Finding the Fourth Proportional to 272,870.44, 409,285.68 and 85,935.40

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Solution

The fourth proportional to 272,870.44, 409,285.68 and 85,935.40 is: 128,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,870.44 : 409,285.68 = 85,935.40 : x
  2. Step 2: Convert to fraction form
    272,870.44/409,285.68 = 85,935.40/x
  3. Step 3: Cross multiply
    272,870.44x = 409,285.68 × 85,935.40
  4. Step 4: Simplify right side
    272,870.44x = 35,172,128,625.07
  5. Step 5: Solve for x
    x = 35,172,128,625.07/272,870.44
  6. Step 6: Final answer
    x = 128,896.81

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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.