Home / 379,585.60-523,828.26-209,819.68

Finding the Fourth Proportional to 379,585.60, 523,828.26 and 209,819.68

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Solution

The fourth proportional to 379,585.60, 523,828.26 and 209,819.68 is: 289,551.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,585.60 : 523,828.26 = 209,819.68 : x
  2. Step 2: Convert to fraction form
    379,585.60/523,828.26 = 209,819.68/x
  3. Step 3: Cross multiply
    379,585.60x = 523,828.26 × 209,819.68
  4. Step 4: Simplify right side
    379,585.60x = 109,909,477,888.16
  5. Step 5: Solve for x
    x = 109,909,477,888.16/379,585.60
  6. Step 6: Final answer
    x = 289,551.23

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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.