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Finding the Fourth Proportional to 410,019.80, 615,029.70 and 144,080.60

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Solution

The fourth proportional to 410,019.80, 615,029.70 and 144,080.60 is: 216,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,019.80 : 615,029.70 = 144,080.60 : x
  2. Step 2: Convert to fraction form
    410,019.80/615,029.70 = 144,080.60/x
  3. Step 3: Cross multiply
    410,019.80x = 615,029.70 × 144,080.60
  4. Step 4: Simplify right side
    410,019.80x = 88,613,848,193.82
  5. Step 5: Solve for x
    x = 88,613,848,193.82/410,019.80
  6. Step 6: Final answer
    x = 216,120.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.