Home / 288,106.97-431,946.32-138,204.50

Finding the Fourth Proportional to 288,106.97, 431,946.32 and 138,204.50

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Solution

The fourth proportional to 288,106.97, 431,946.32 and 138,204.50 is: 207,204.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,106.97 : 431,946.32 = 138,204.50 : x
  2. Step 2: Convert to fraction form
    288,106.97/431,946.32 = 138,204.50/x
  3. Step 3: Cross multiply
    288,106.97x = 431,946.32 × 138,204.50
  4. Step 4: Simplify right side
    288,106.97x = 59,696,922,331.69
  5. Step 5: Solve for x
    x = 59,696,922,331.69/288,106.97
  6. Step 6: Final answer
    x = 207,204.02

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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.