Home / 389,637.20-584,052.60-211,768.40

Finding the Fourth Proportional to 389,637.20, 584,052.60 and 211,768.40

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Solution

The fourth proportional to 389,637.20, 584,052.60 and 211,768.40 is: 317,433.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,637.20 : 584,052.60 = 211,768.40 : x
  2. Step 2: Convert to fraction form
    389,637.20/584,052.60 = 211,768.40/x
  3. Step 3: Cross multiply
    389,637.20x = 584,052.60 × 211,768.40
  4. Step 4: Simplify right side
    389,637.20x = 123,683,884,617.84
  5. Step 5: Solve for x
    x = 123,683,884,617.84/389,637.20
  6. Step 6: Final answer
    x = 317,433.46

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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.