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Finding the Fourth Proportional to 411,427.20, 617,019.84 and 174,768

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Solution

The fourth proportional to 411,427.20, 617,019.84 and 174,768 is: 262,100.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,427.20 : 617,019.84 = 174,768 : x
  2. Step 2: Convert to fraction form
    411,427.20/617,019.84 = 174,768/x
  3. Step 3: Cross multiply
    411,427.20x = 617,019.84 × 174,768
  4. Step 4: Simplify right side
    411,427.20x = 107,835,323,397.12
  5. Step 5: Solve for x
    x = 107,835,323,397.12/411,427.20
  6. Step 6: Final answer
    x = 262,100.62

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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.