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Finding the Fourth Proportional to 387,069.60, 580,604.40 and 102,759.60

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Solution

The fourth proportional to 387,069.60, 580,604.40 and 102,759.60 is: 154,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,069.60 : 580,604.40 = 102,759.60 : x
  2. Step 2: Convert to fraction form
    387,069.60/580,604.40 = 102,759.60/x
  3. Step 3: Cross multiply
    387,069.60x = 580,604.40 × 102,759.60
  4. Step 4: Simplify right side
    387,069.60x = 59,662,675,902.24
  5. Step 5: Solve for x
    x = 59,662,675,902.24/387,069.60
  6. Step 6: Final answer
    x = 154,139.40

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1.5x scale

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.