Home / 278,749.84-418,130.34-89,246.38

Finding the Fourth Proportional to 278,749.84, 418,130.34 and 89,246.38

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Solution

The fourth proportional to 278,749.84, 418,130.34 and 89,246.38 is: 133,871.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,749.84 : 418,130.34 = 89,246.38 : x
  2. Step 2: Convert to fraction form
    278,749.84/418,130.34 = 89,246.38/x
  3. Step 3: Cross multiply
    278,749.84x = 418,130.34 × 89,246.38
  4. Step 4: Simplify right side
    278,749.84x = 37,316,619,213.17
  5. Step 5: Solve for x
    x = 37,316,619,213.17/278,749.84
  6. Step 6: Final answer
    x = 133,871.36

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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.