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Finding the Fourth Proportional to 617,663.20, 926,494.80 and 218,300.80

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Solution

The fourth proportional to 617,663.20, 926,494.80 and 218,300.80 is: 327,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,663.20 : 926,494.80 = 218,300.80 : x
  2. Step 2: Convert to fraction form
    617,663.20/926,494.80 = 218,300.80/x
  3. Step 3: Cross multiply
    617,663.20x = 926,494.80 × 218,300.80
  4. Step 4: Simplify right side
    617,663.20x = 202,254,556,035.84
  5. Step 5: Solve for x
    x = 202,254,556,035.84/617,663.20
  6. Step 6: Final answer
    x = 327,451.20

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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.