Home / 391,391,860.08-540,121,112.64-215,182,853.04

Finding the Fourth Proportional to 391,391,860.08, 540,121,112.64 and 215,182,853.04

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Solution

The fourth proportional to 391,391,860.08, 540,121,112.64 and 215,182,853.04 is: 296,952,527.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,391,860.08 : 540,121,112.64 = 215,182,853.04 : x
  2. Step 2: Convert to fraction form
    391,391,860.08/540,121,112.64 = 215,182,853.04/x
  3. Step 3: Cross multiply
    391,391,860.08x = 540,121,112.64 × 215,182,853.04
  4. Step 4: Simplify right side
    391,391,860.08x = 116,224,802,005,014,400
  5. Step 5: Solve for x
    x = 116,224,802,005,014,400/391,391,860.08
  6. Step 6: Final answer
    x = 296,952,527.27

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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.