Home / 289,989,065.39-400,193,408.18-157,838,621.27

Finding the Fourth Proportional to 289,989,065.39, 400,193,408.18 and 157,838,621.27

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Solution

The fourth proportional to 289,989,065.39, 400,193,408.18 and 157,838,621.27 is: 217,821,922.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,989,065.39 : 400,193,408.18 = 157,838,621.27 : x
  2. Step 2: Convert to fraction form
    289,989,065.39/400,193,408.18 = 157,838,621.27/x
  3. Step 3: Cross multiply
    289,989,065.39x = 400,193,408.18 × 157,838,621.27
  4. Step 4: Simplify right side
    289,989,065.39x = 63,165,975,786,867,168
  5. Step 5: Solve for x
    x = 63,165,975,786,867,168/289,989,065.39
  6. Step 6: Final answer
    x = 217,821,922.71

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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.