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Finding the Fourth Proportional to 279,980.10, 419,970.15 and 174,858.30

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Solution

The fourth proportional to 279,980.10, 419,970.15 and 174,858.30 is: 262,287.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,980.10 : 419,970.15 = 174,858.30 : x
  2. Step 2: Convert to fraction form
    279,980.10/419,970.15 = 174,858.30/x
  3. Step 3: Cross multiply
    279,980.10x = 419,970.15 × 174,858.30
  4. Step 4: Simplify right side
    279,980.10x = 73,435,266,479.75
  5. Step 5: Solve for x
    x = 73,435,266,479.75/279,980.10
  6. Step 6: Final answer
    x = 262,287.45

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1.5x scale

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.