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Finding the Fourth Proportional to 450,164.05, 621,309.50 and 289,220.29

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Solution

The fourth proportional to 450,164.05, 621,309.50 and 289,220.29 is: 399,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,164.05 : 621,309.50 = 289,220.29 : x
  2. Step 2: Convert to fraction form
    450,164.05/621,309.50 = 289,220.29/x
  3. Step 3: Cross multiply
    450,164.05x = 621,309.50 × 289,220.29
  4. Step 4: Simplify right side
    450,164.05x = 179,695,313,769.76
  5. Step 5: Solve for x
    x = 179,695,313,769.76/450,164.05
  6. Step 6: Final answer
    x = 399,177.40

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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.