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Finding the Fourth Proportional to 408,543.60, 612,815.40 and 303,567.60

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Solution

The fourth proportional to 408,543.60, 612,815.40 and 303,567.60 is: 455,351.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,543.60 : 612,815.40 = 303,567.60 : x
  2. Step 2: Convert to fraction form
    408,543.60/612,815.40 = 303,567.60/x
  3. Step 3: Cross multiply
    408,543.60x = 612,815.40 × 303,567.60
  4. Step 4: Simplify right side
    408,543.60x = 186,030,900,221.04
  5. Step 5: Solve for x
    x = 186,030,900,221.04/408,543.60
  6. Step 6: Final answer
    x = 455,351.40

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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.