Home / 391,428.11-540,161.61-230,293.53

Finding the Fourth Proportional to 391,428.11, 540,161.61 and 230,293.53

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Solution

The fourth proportional to 391,428.11, 540,161.61 and 230,293.53 is: 317,799.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,428.11 : 540,161.61 = 230,293.53 : x
  2. Step 2: Convert to fraction form
    391,428.11/540,161.61 = 230,293.53/x
  3. Step 3: Cross multiply
    391,428.11x = 540,161.61 × 230,293.53
  4. Step 4: Simplify right side
    391,428.11x = 124,395,723,937.38
  5. Step 5: Solve for x
    x = 124,395,723,937.38/391,428.11
  6. Step 6: Final answer
    x = 317,799.67

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1.5x scale

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.