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Finding the Fourth Proportional to 389,430.60, 584,145.90 and 202,806.60

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Solution

The fourth proportional to 389,430.60, 584,145.90 and 202,806.60 is: 304,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,430.60 : 584,145.90 = 202,806.60 : x
  2. Step 2: Convert to fraction form
    389,430.60/584,145.90 = 202,806.60/x
  3. Step 3: Cross multiply
    389,430.60x = 584,145.90 × 202,806.60
  4. Step 4: Simplify right side
    389,430.60x = 118,468,643,882.94
  5. Step 5: Solve for x
    x = 118,468,643,882.94/389,430.60
  6. Step 6: Final answer
    x = 304,209.90

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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.