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Finding the Fourth Proportional to 484,331.51, 668,367.06 and 280,391.06

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Solution

The fourth proportional to 484,331.51, 668,367.06 and 280,391.06 is: 386,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,331.51 : 668,367.06 = 280,391.06 : x
  2. Step 2: Convert to fraction form
    484,331.51/668,367.06 = 280,391.06/x
  3. Step 3: Cross multiply
    484,331.51x = 668,367.06 × 280,391.06
  4. Step 4: Simplify right side
    484,331.51x = 187,404,148,422.48
  5. Step 5: Solve for x
    x = 187,404,148,422.48/484,331.51
  6. Step 6: Final answer
    x = 386,933.63

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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.