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Finding the Fourth Proportional to 380,017.20, 570,025.80 and 99,562.80

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Solution

The fourth proportional to 380,017.20, 570,025.80 and 99,562.80 is: 149,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,017.20 : 570,025.80 = 99,562.80 : x
  2. Step 2: Convert to fraction form
    380,017.20/570,025.80 = 99,562.80/x
  3. Step 3: Cross multiply
    380,017.20x = 570,025.80 × 99,562.80
  4. Step 4: Simplify right side
    380,017.20x = 56,753,364,720.24
  5. Step 5: Solve for x
    x = 56,753,364,720.24/380,017.20
  6. Step 6: Final answer
    x = 149,344.20

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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.