Home / 411,947.40-617,921.10-145,716.60

Finding the Fourth Proportional to 411,947.40, 617,921.10 and 145,716.60

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Solution

The fourth proportional to 411,947.40, 617,921.10 and 145,716.60 is: 218,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,947.40 : 617,921.10 = 145,716.60 : x
  2. Step 2: Convert to fraction form
    411,947.40/617,921.10 = 145,716.60/x
  3. Step 3: Cross multiply
    411,947.40x = 617,921.10 × 145,716.60
  4. Step 4: Simplify right side
    411,947.40x = 90,041,361,760.26
  5. Step 5: Solve for x
    x = 90,041,361,760.26/411,947.40
  6. Step 6: Final answer
    x = 218,574.90

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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.