Home / 387,528.75-534,839.79-217,762.89

Finding the Fourth Proportional to 387,528.75, 534,839.79 and 217,762.89

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Solution

The fourth proportional to 387,528.75, 534,839.79 and 217,762.89 is: 300,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,528.75 : 534,839.79 = 217,762.89 : x
  2. Step 2: Convert to fraction form
    387,528.75/534,839.79 = 217,762.89/x
  3. Step 3: Cross multiply
    387,528.75x = 534,839.79 × 217,762.89
  4. Step 4: Simplify right side
    387,528.75x = 116,468,258,357.39
  5. Step 5: Solve for x
    x = 116,468,258,357.39/387,528.75
  6. Step 6: Final answer
    x = 300,540.95

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1.5x scale

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.