Home / 391,373,740.41-540,096,109.25-215,164,733.78

Finding the Fourth Proportional to 391,373,740.41, 540,096,109.25 and 215,164,733.78

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Solution

The fourth proportional to 391,373,740.41, 540,096,109.25 and 215,164,733.78 is: 296,927,523.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,373,740.41 : 540,096,109.25 = 215,164,733.78 : x
  2. Step 2: Convert to fraction form
    391,373,740.41/540,096,109.25 = 215,164,733.78/x
  3. Step 3: Cross multiply
    391,373,740.41x = 540,096,109.25 × 215,164,733.78
  4. Step 4: Simplify right side
    391,373,740.41x = 116,209,635,558,613,744
  5. Step 5: Solve for x
    x = 116,209,635,558,613,744/391,373,740.41
  6. Step 6: Final answer
    x = 296,927,523.64

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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.