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Finding the Fourth Proportional to 279,137.64, 418,547.88 and 190,498.52

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Solution

The fourth proportional to 279,137.64, 418,547.88 and 190,498.52 is: 285,639.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,137.64 : 418,547.88 = 190,498.52 : x
  2. Step 2: Convert to fraction form
    279,137.64/418,547.88 = 190,498.52/x
  3. Step 3: Cross multiply
    279,137.64x = 418,547.88 × 190,498.52
  4. Step 4: Simplify right side
    279,137.64x = 79,732,751,689.14
  5. Step 5: Solve for x
    x = 79,732,751,689.14/279,137.64
  6. Step 6: Final answer
    x = 285,639.56

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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.