Home / 387,087.36-534,172.68-217,321.44

Finding the Fourth Proportional to 387,087.36, 534,172.68 and 217,321.44

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Solution

The fourth proportional to 387,087.36, 534,172.68 and 217,321.44 is: 299,899.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,087.36 : 534,172.68 = 217,321.44 : x
  2. Step 2: Convert to fraction form
    387,087.36/534,172.68 = 217,321.44/x
  3. Step 3: Cross multiply
    387,087.36x = 534,172.68 × 217,321.44
  4. Step 4: Simplify right side
    387,087.36x = 116,087,176,026.26
  5. Step 5: Solve for x
    x = 116,087,176,026.26/387,087.36
  6. Step 6: Final answer
    x = 299,899.16

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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.