Home / 272,845.10-409,267.65-85,832.30

Finding the Fourth Proportional to 272,845.10, 409,267.65 and 85,832.30

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Solution

The fourth proportional to 272,845.10, 409,267.65 and 85,832.30 is: 128,748.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,845.10 : 409,267.65 = 85,832.30 : x
  2. Step 2: Convert to fraction form
    272,845.10/409,267.65 = 85,832.30/x
  3. Step 3: Cross multiply
    272,845.10x = 409,267.65 × 85,832.30
  4. Step 4: Simplify right side
    272,845.10x = 35,128,383,715.10
  5. Step 5: Solve for x
    x = 35,128,383,715.10/272,845.10
  6. Step 6: Final answer
    x = 128,748.45

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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.