Home / 411,979.40-617,969.10-145,748.60

Finding the Fourth Proportional to 411,979.40, 617,969.10 and 145,748.60

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Solution

The fourth proportional to 411,979.40, 617,969.10 and 145,748.60 is: 218,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,979.40 : 617,969.10 = 145,748.60 : x
  2. Step 2: Convert to fraction form
    411,979.40/617,969.10 = 145,748.60/x
  3. Step 3: Cross multiply
    411,979.40x = 617,969.10 × 145,748.60
  4. Step 4: Simplify right side
    411,979.40x = 90,068,131,168.26
  5. Step 5: Solve for x
    x = 90,068,131,168.26/411,979.40
  6. Step 6: Final answer
    x = 218,622.90

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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.