Home / 387,268.13-534,372.05-217,469.45

Finding the Fourth Proportional to 387,268.13, 534,372.05 and 217,469.45

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Solution

The fourth proportional to 387,268.13, 534,372.05 and 217,469.45 is: 300,075.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,268.13 : 534,372.05 = 217,469.45 : x
  2. Step 2: Convert to fraction form
    387,268.13/534,372.05 = 217,469.45/x
  3. Step 3: Cross multiply
    387,268.13x = 534,372.05 × 217,469.45
  4. Step 4: Simplify right side
    387,268.13x = 116,209,594,721.53
  5. Step 5: Solve for x
    x = 116,209,594,721.53/387,268.13
  6. Step 6: Final answer
    x = 300,075.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.