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Finding the Fourth Proportional to 279,681.15, 419,582.49 and 102,187.89

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Solution

The fourth proportional to 279,681.15, 419,582.49 and 102,187.89 is: 153,304.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,681.15 : 419,582.49 = 102,187.89 : x
  2. Step 2: Convert to fraction form
    279,681.15/419,582.49 = 102,187.89/x
  3. Step 3: Cross multiply
    279,681.15x = 419,582.49 × 102,187.89
  4. Step 4: Simplify right side
    279,681.15x = 42,876,249,334.05
  5. Step 5: Solve for x
    x = 42,876,249,334.05/279,681.15
  6. Step 6: Final answer
    x = 153,304.04

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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.