Home / 450,165.05-621,310.88-289,221.29

Finding the Fourth Proportional to 450,165.05, 621,310.88 and 289,221.29

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Solution

The fourth proportional to 450,165.05, 621,310.88 and 289,221.29 is: 399,178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,165.05 : 621,310.88 = 289,221.29 : x
  2. Step 2: Convert to fraction form
    450,165.05/621,310.88 = 289,221.29/x
  3. Step 3: Cross multiply
    450,165.05x = 621,310.88 × 289,221.29
  4. Step 4: Simplify right side
    450,165.05x = 179,696,334,204.64
  5. Step 5: Solve for x
    x = 179,696,334,204.64/450,165.05
  6. Step 6: Final answer
    x = 399,178.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.