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Finding the Fourth Proportional to 380,018.80, 569,671.80 and 143,520.40

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Solution

The fourth proportional to 380,018.80, 569,671.80 and 143,520.40 is: 215,146.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,018.80 : 569,671.80 = 143,520.40 : x
  2. Step 2: Convert to fraction form
    380,018.80/569,671.80 = 143,520.40/x
  3. Step 3: Cross multiply
    380,018.80x = 569,671.80 × 143,520.40
  4. Step 4: Simplify right side
    380,018.80x = 81,759,524,604.72
  5. Step 5: Solve for x
    x = 81,759,524,604.72/380,018.80
  6. Step 6: Final answer
    x = 215,146.00

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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.