Home / 288,918.36-433,388.88-89,220.96

Finding the Fourth Proportional to 288,918.36, 433,388.88 and 89,220.96

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Solution

The fourth proportional to 288,918.36, 433,388.88 and 89,220.96 is: 133,834.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,918.36 : 433,388.88 = 89,220.96 : x
  2. Step 2: Convert to fraction form
    288,918.36/433,388.88 = 89,220.96/x
  3. Step 3: Cross multiply
    288,918.36x = 433,388.88 × 89,220.96
  4. Step 4: Simplify right side
    288,918.36x = 38,667,371,926.92
  5. Step 5: Solve for x
    x = 38,667,371,926.92/288,918.36
  6. Step 6: Final answer
    x = 133,834.94

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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.