Home / 383,301.60-528,979.36-211,219.28

Finding the Fourth Proportional to 383,301.60, 528,979.36 and 211,219.28

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Solution

The fourth proportional to 383,301.60, 528,979.36 and 211,219.28 is: 291,495.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,301.60 : 528,979.36 = 211,219.28 : x
  2. Step 2: Convert to fraction form
    383,301.60/528,979.36 = 211,219.28/x
  3. Step 3: Cross multiply
    383,301.60x = 528,979.36 × 211,219.28
  4. Step 4: Simplify right side
    383,301.60x = 111,730,639,554.06
  5. Step 5: Solve for x
    x = 111,730,639,554.06/383,301.60
  6. Step 6: Final answer
    x = 291,495.36

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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.