Home / 391,223,325.79-539,900,339.25-215,008,119.01

Finding the Fourth Proportional to 391,223,325.79, 539,900,339.25 and 215,008,119.01

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Solution

The fourth proportional to 391,223,325.79, 539,900,339.25 and 215,008,119.01 is: 296,717,881.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,223,325.79 : 539,900,339.25 = 215,008,119.01 : x
  2. Step 2: Convert to fraction form
    391,223,325.79/539,900,339.25 = 215,008,119.01/x
  3. Step 3: Cross multiply
    391,223,325.79x = 539,900,339.25 × 215,008,119.01
  4. Step 4: Simplify right side
    391,223,325.79x = 116,082,956,395,003,376
  5. Step 5: Solve for x
    x = 116,082,956,395,003,376/391,223,325.79
  6. Step 6: Final answer
    x = 296,717,881.43

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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.