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Finding the Fourth Proportional to 380,966.40, 571,190.40 and 181,382.40

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Solution

The fourth proportional to 380,966.40, 571,190.40 and 181,382.40 is: 271,950.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,966.40 : 571,190.40 = 181,382.40 : x
  2. Step 2: Convert to fraction form
    380,966.40/571,190.40 = 181,382.40/x
  3. Step 3: Cross multiply
    380,966.40x = 571,190.40 × 181,382.40
  4. Step 4: Simplify right side
    380,966.40x = 103,603,885,608.96
  5. Step 5: Solve for x
    x = 103,603,885,608.96/380,966.40
  6. Step 6: Final answer
    x = 271,950.19

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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.