Home / 279,124.43-418,678.88-89,583.28

Finding the Fourth Proportional to 279,124.43, 418,678.88 and 89,583.28

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Solution

The fourth proportional to 279,124.43, 418,678.88 and 89,583.28 is: 134,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,124.43 : 418,678.88 = 89,583.28 : x
  2. Step 2: Convert to fraction form
    279,124.43/418,678.88 = 89,583.28/x
  3. Step 3: Cross multiply
    279,124.43x = 418,678.88 × 89,583.28
  4. Step 4: Simplify right side
    279,124.43x = 37,506,625,842.51
  5. Step 5: Solve for x
    x = 37,506,625,842.51/279,124.43
  6. Step 6: Final answer
    x = 134,372.42

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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.