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Finding the Fourth Proportional to 279,036.40, 419,591.40 and 233,417.20

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Solution

The fourth proportional to 279,036.40, 419,591.40 and 233,417.20 is: 350,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,036.40 : 419,591.40 = 233,417.20 : x
  2. Step 2: Convert to fraction form
    279,036.40/419,591.40 = 233,417.20/x
  3. Step 3: Cross multiply
    279,036.40x = 419,591.40 × 233,417.20
  4. Step 4: Simplify right side
    279,036.40x = 97,939,849,732.08
  5. Step 5: Solve for x
    x = 97,939,849,732.08/279,036.40
  6. Step 6: Final answer
    x = 350,993.10

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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.