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Finding the Fourth Proportional to 499,165.39, 688,989.54 and 295,287.18

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Solution

The fourth proportional to 499,165.39, 688,989.54 and 295,287.18 is: 407,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,165.39 : 688,989.54 = 295,287.18 : x
  2. Step 2: Convert to fraction form
    499,165.39/688,989.54 = 295,287.18/x
  3. Step 3: Cross multiply
    499,165.39x = 688,989.54 × 295,287.18
  4. Step 4: Simplify right side
    499,165.39x = 203,449,778,316.10
  5. Step 5: Solve for x
    x = 203,449,778,316.10/499,165.39
  6. Step 6: Final answer
    x = 407,579.90

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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.