Home / 391,152.26-539,697.54-221,386.38

Finding the Fourth Proportional to 391,152.26, 539,697.54 and 221,386.38

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Solution

The fourth proportional to 391,152.26, 539,697.54 and 221,386.38 is: 305,460.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,152.26 : 539,697.54 = 221,386.38 : x
  2. Step 2: Convert to fraction form
    391,152.26/539,697.54 = 221,386.38/x
  3. Step 3: Cross multiply
    391,152.26x = 539,697.54 × 221,386.38
  4. Step 4: Simplify right side
    391,152.26x = 119,481,684,675.51
  5. Step 5: Solve for x
    x = 119,481,684,675.51/391,152.26
  6. Step 6: Final answer
    x = 305,460.81

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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.