Home / 421,200.48-581,256.54-239,929.20

Finding the Fourth Proportional to 421,200.48, 581,256.54 and 239,929.20

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Solution

The fourth proportional to 421,200.48, 581,256.54 and 239,929.20 is: 331,102.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,200.48 : 581,256.54 = 239,929.20 : x
  2. Step 2: Convert to fraction form
    421,200.48/581,256.54 = 239,929.20/x
  3. Step 3: Cross multiply
    421,200.48x = 581,256.54 × 239,929.20
  4. Step 4: Simplify right side
    421,200.48x = 139,460,416,636.97
  5. Step 5: Solve for x
    x = 139,460,416,636.97/421,200.48
  6. Step 6: Final answer
    x = 331,102.23

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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.