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Finding the Fourth Proportional to 272,969.70, 409,381.65 and 83,429.70

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Solution

The fourth proportional to 272,969.70, 409,381.65 and 83,429.70 is: 125,122.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,969.70 : 409,381.65 = 83,429.70 : x
  2. Step 2: Convert to fraction form
    272,969.70/409,381.65 = 83,429.70/x
  3. Step 3: Cross multiply
    272,969.70x = 409,381.65 × 83,429.70
  4. Step 4: Simplify right side
    272,969.70x = 34,154,588,245.01
  5. Step 5: Solve for x
    x = 34,154,588,245.01/272,969.70
  6. Step 6: Final answer
    x = 125,122.27

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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.