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Finding the Fourth Proportional to 450,171.60, 621,304.20 and 280,460.40

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Solution

The fourth proportional to 450,171.60, 621,304.20 and 280,460.40 is: 387,077.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,171.60 : 621,304.20 = 280,460.40 : x
  2. Step 2: Convert to fraction form
    450,171.60/621,304.20 = 280,460.40/x
  3. Step 3: Cross multiply
    450,171.60x = 621,304.20 × 280,460.40
  4. Step 4: Simplify right side
    450,171.60x = 174,251,224,453.68
  5. Step 5: Solve for x
    x = 174,251,224,453.68/450,171.60
  6. Step 6: Final answer
    x = 387,077.34

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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.