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Finding the Fourth Proportional to 362,042.48, 500,139.78 and 289,352.30

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Solution

The fourth proportional to 362,042.48, 500,139.78 and 289,352.30 is: 399,722.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,042.48 : 500,139.78 = 289,352.30 : x
  2. Step 2: Convert to fraction form
    362,042.48/500,139.78 = 289,352.30/x
  3. Step 3: Cross multiply
    362,042.48x = 500,139.78 × 289,352.30
  4. Step 4: Simplify right side
    362,042.48x = 144,716,593,163.80
  5. Step 5: Solve for x
    x = 144,716,593,163.80/362,042.48
  6. Step 6: Final answer
    x = 399,722.69

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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.