Home / 387,087.51-534,167.06-217,328.79

Finding the Fourth Proportional to 387,087.51, 534,167.06 and 217,328.79

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Solution

The fourth proportional to 387,087.51, 534,167.06 and 217,328.79 is: 299,906.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,087.51 : 534,167.06 = 217,328.79 : x
  2. Step 2: Convert to fraction form
    387,087.51/534,167.06 = 217,328.79/x
  3. Step 3: Cross multiply
    387,087.51x = 534,167.06 × 217,328.79
  4. Step 4: Simplify right side
    387,087.51x = 116,089,879,721.01
  5. Step 5: Solve for x
    x = 116,089,879,721.01/387,087.51
  6. Step 6: Final answer
    x = 299,906.03

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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.