Home / 268,999.10-402,623.85-209,512.70

Finding the Fourth Proportional to 268,999.10, 402,623.85 and 209,512.70

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Solution

The fourth proportional to 268,999.10, 402,623.85 and 209,512.70 is: 313,587.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,999.10 : 402,623.85 = 209,512.70 : x
  2. Step 2: Convert to fraction form
    268,999.10/402,623.85 = 209,512.70/x
  3. Step 3: Cross multiply
    268,999.10x = 402,623.85 × 209,512.70
  4. Step 4: Simplify right side
    268,999.10x = 84,354,809,897.90
  5. Step 5: Solve for x
    x = 84,354,809,897.90/268,999.10
  6. Step 6: Final answer
    x = 313,587.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.