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Finding the Fourth Proportional to 464,139, 640,511.82 and 262,935

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Solution

The fourth proportional to 464,139, 640,511.82 and 262,935 is: 362,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,139 : 640,511.82 = 262,935 : x
  2. Step 2: Convert to fraction form
    464,139/640,511.82 = 262,935/x
  3. Step 3: Cross multiply
    464,139x = 640,511.82 × 262,935
  4. Step 4: Simplify right side
    464,139x = 168,412,975,391.70
  5. Step 5: Solve for x
    x = 168,412,975,391.70/464,139
  6. Step 6: Final answer
    x = 362,850.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.