Home / 434,043.89-651,129.27-209,219.45

Finding the Fourth Proportional to 434,043.89, 651,129.27 and 209,219.45

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Solution

The fourth proportional to 434,043.89, 651,129.27 and 209,219.45 is: 313,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,043.89 : 651,129.27 = 209,219.45 : x
  2. Step 2: Convert to fraction form
    434,043.89/651,129.27 = 209,219.45/x
  3. Step 3: Cross multiply
    434,043.89x = 651,129.27 × 209,219.45
  4. Step 4: Simplify right side
    434,043.89x = 136,228,904,492.66
  5. Step 5: Solve for x
    x = 136,228,904,492.66/434,043.89
  6. Step 6: Final answer
    x = 313,859.74

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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.