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Finding the Fourth Proportional to 400,133.20, 561,119.60 and 400,133.20

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Solution

The fourth proportional to 400,133.20, 561,119.60 and 400,133.20 is: 561,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,133.20 : 561,119.60 = 400,133.20 : x
  2. Step 2: Convert to fraction form
    400,133.20/561,119.60 = 400,133.20/x
  3. Step 3: Cross multiply
    400,133.20x = 561,119.60 × 400,133.20
  4. Step 4: Simplify right side
    400,133.20x = 224,522,581,130.72
  5. Step 5: Solve for x
    x = 224,522,581,130.72/400,133.20
  6. Step 6: Final answer
    x = 561,119.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.