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Finding the Fourth Proportional to 484,322.51, 668,354.63 and 280,382.06

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Solution

The fourth proportional to 484,322.51, 668,354.63 and 280,382.06 is: 386,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,322.51 : 668,354.63 = 280,382.06 : x
  2. Step 2: Convert to fraction form
    484,322.51/668,354.63 = 280,382.06/x
  3. Step 3: Cross multiply
    484,322.51x = 668,354.63 × 280,382.06
  4. Step 4: Simplify right side
    484,322.51x = 187,394,646,568.03
  5. Step 5: Solve for x
    x = 187,394,646,568.03/484,322.51
  6. Step 6: Final answer
    x = 386,921.20

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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.