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Finding the Fourth Proportional to 272,847.61, 409,334.73 and 85,854.25

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Solution

The fourth proportional to 272,847.61, 409,334.73 and 85,854.25 is: 128,801.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,847.61 : 409,334.73 = 85,854.25 : x
  2. Step 2: Convert to fraction form
    272,847.61/409,334.73 = 85,854.25/x
  3. Step 3: Cross multiply
    272,847.61x = 409,334.73 × 85,854.25
  4. Step 4: Simplify right side
    272,847.61x = 35,143,126,243.10
  5. Step 5: Solve for x
    x = 35,143,126,243.10/272,847.61
  6. Step 6: Final answer
    x = 128,801.30

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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.