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Finding the Fourth Proportional to 486,140.63, 670,874.12 and 268,349.37

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Solution

The fourth proportional to 486,140.63, 670,874.12 and 268,349.37 is: 370,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,140.63 : 670,874.12 = 268,349.37 : x
  2. Step 2: Convert to fraction form
    486,140.63/670,874.12 = 268,349.37/x
  3. Step 3: Cross multiply
    486,140.63x = 670,874.12 × 268,349.37
  4. Step 4: Simplify right side
    486,140.63x = 180,028,646,109.56
  5. Step 5: Solve for x
    x = 180,028,646,109.56/486,140.63
  6. Step 6: Final answer
    x = 370,322.16

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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.