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Finding the Fourth Proportional to 368,446.80, 552,961.80 and 143,914.80

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Solution

The fourth proportional to 368,446.80, 552,961.80 and 143,914.80 is: 215,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,446.80 : 552,961.80 = 143,914.80 : x
  2. Step 2: Convert to fraction form
    368,446.80/552,961.80 = 143,914.80/x
  3. Step 3: Cross multiply
    368,446.80x = 552,961.80 × 143,914.80
  4. Step 4: Simplify right side
    368,446.80x = 79,579,386,854.64
  5. Step 5: Solve for x
    x = 79,579,386,854.64/368,446.80
  6. Step 6: Final answer
    x = 215,986.10

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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.