Home / 391,373,755.29-540,096,129.72-215,164,748.66

Finding the Fourth Proportional to 391,373,755.29, 540,096,129.72 and 215,164,748.66

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Solution

The fourth proportional to 391,373,755.29, 540,096,129.72 and 215,164,748.66 is: 296,927,544.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,373,755.29 : 540,096,129.72 = 215,164,748.66 : x
  2. Step 2: Convert to fraction form
    391,373,755.29/540,096,129.72 = 215,164,748.66/x
  3. Step 3: Cross multiply
    391,373,755.29x = 540,096,129.72 × 215,164,748.66
  4. Step 4: Simplify right side
    391,373,755.29x = 116,209,648,000,742,080
  5. Step 5: Solve for x
    x = 116,209,648,000,742,080/391,373,755.29
  6. Step 6: Final answer
    x = 296,927,544.14

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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.