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Finding the Fourth Proportional to 411,681.20, 617,199.20 and 162,549.68

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Solution

The fourth proportional to 411,681.20, 617,199.20 and 162,549.68 is: 243,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,681.20 : 617,199.20 = 162,549.68 : x
  2. Step 2: Convert to fraction form
    411,681.20/617,199.20 = 162,549.68/x
  3. Step 3: Cross multiply
    411,681.20x = 617,199.20 × 162,549.68
  4. Step 4: Simplify right side
    411,681.20x = 100,325,532,456.26
  5. Step 5: Solve for x
    x = 100,325,532,456.26/411,681.20
  6. Step 6: Final answer
    x = 243,697.14

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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.