Home / 391,357.05-539,834.02-258,749.41

Finding the Fourth Proportional to 391,357.05, 539,834.02 and 258,749.41

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Solution

The fourth proportional to 391,357.05, 539,834.02 and 258,749.41 is: 356,916.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,357.05 : 539,834.02 = 258,749.41 : x
  2. Step 2: Convert to fraction form
    391,357.05/539,834.02 = 258,749.41/x
  3. Step 3: Cross multiply
    391,357.05x = 539,834.02 × 258,749.41
  4. Step 4: Simplify right side
    391,357.05x = 139,681,732,176.47
  5. Step 5: Solve for x
    x = 139,681,732,176.47/391,357.05
  6. Step 6: Final answer
    x = 356,916.36

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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.