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Finding the Fourth Proportional to 462,640.32, 638,392.32 and 261,436.32

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Solution

The fourth proportional to 462,640.32, 638,392.32 and 261,436.32 is: 360,753.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,640.32 : 638,392.32 = 261,436.32 : x
  2. Step 2: Convert to fraction form
    462,640.32/638,392.32 = 261,436.32/x
  3. Step 3: Cross multiply
    462,640.32x = 638,392.32 × 261,436.32
  4. Step 4: Simplify right side
    462,640.32x = 166,898,938,857.06
  5. Step 5: Solve for x
    x = 166,898,938,857.06/462,640.32
  6. Step 6: Final answer
    x = 360,753.12

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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.