Home / 387,279.12-534,447.30-217,513.26

Finding the Fourth Proportional to 387,279.12, 534,447.30 and 217,513.26

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Solution

The fourth proportional to 387,279.12, 534,447.30 and 217,513.26 is: 300,169.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,279.12 : 534,447.30 = 217,513.26 : x
  2. Step 2: Convert to fraction form
    387,279.12/534,447.30 = 217,513.26/x
  3. Step 3: Cross multiply
    387,279.12x = 534,447.30 × 217,513.26
  4. Step 4: Simplify right side
    387,279.12x = 116,249,374,521.20
  5. Step 5: Solve for x
    x = 116,249,374,521.20/387,279.12
  6. Step 6: Final answer
    x = 300,169.49

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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.