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Finding the Fourth Proportional to 410,068.60, 615,102.90 and 309,029.20

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Solution

The fourth proportional to 410,068.60, 615,102.90 and 309,029.20 is: 463,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,068.60 : 615,102.90 = 309,029.20 : x
  2. Step 2: Convert to fraction form
    410,068.60/615,102.90 = 309,029.20/x
  3. Step 3: Cross multiply
    410,068.60x = 615,102.90 × 309,029.20
  4. Step 4: Simplify right side
    410,068.60x = 190,084,757,104.68
  5. Step 5: Solve for x
    x = 190,084,757,104.68/410,068.60
  6. Step 6: Final answer
    x = 463,543.80

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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.