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Finding the Fourth Proportional to 455,591.80, 683,387.70 and 243,015.40

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Solution

The fourth proportional to 455,591.80, 683,387.70 and 243,015.40 is: 364,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,591.80 : 683,387.70 = 243,015.40 : x
  2. Step 2: Convert to fraction form
    455,591.80/683,387.70 = 243,015.40/x
  3. Step 3: Cross multiply
    455,591.80x = 683,387.70 × 243,015.40
  4. Step 4: Simplify right side
    455,591.80x = 166,073,735,270.58
  5. Step 5: Solve for x
    x = 166,073,735,270.58/455,591.80
  6. Step 6: Final answer
    x = 364,523.10

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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.