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Finding the Fourth Proportional to 313,085.49, 432,057.85 and 169,845.53

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Solution

The fourth proportional to 313,085.49, 432,057.85 and 169,845.53 is: 234,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,085.49 : 432,057.85 = 169,845.53 : x
  2. Step 2: Convert to fraction form
    313,085.49/432,057.85 = 169,845.53/x
  3. Step 3: Cross multiply
    313,085.49x = 432,057.85 × 169,845.53
  4. Step 4: Simplify right side
    313,085.49x = 73,383,096,659.30
  5. Step 5: Solve for x
    x = 73,383,096,659.30/313,085.49
  6. Step 6: Final answer
    x = 234,386.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.