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Finding the Fourth Proportional to 455,544.40, 683,316.60 and 258,936.40

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Solution

The fourth proportional to 455,544.40, 683,316.60 and 258,936.40 is: 388,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,544.40 : 683,316.60 = 258,936.40 : x
  2. Step 2: Convert to fraction form
    455,544.40/683,316.60 = 258,936.40/x
  3. Step 3: Cross multiply
    455,544.40x = 683,316.60 × 258,936.40
  4. Step 4: Simplify right side
    455,544.40x = 176,935,540,464.24
  5. Step 5: Solve for x
    x = 176,935,540,464.24/455,544.40
  6. Step 6: Final answer
    x = 388,404.60

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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.