Home / 259,680.40-389,666.40-109,895.20

Finding the Fourth Proportional to 259,680.40, 389,666.40 and 109,895.20

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Solution

The fourth proportional to 259,680.40, 389,666.40 and 109,895.20 is: 164,904.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,680.40 : 389,666.40 = 109,895.20 : x
  2. Step 2: Convert to fraction form
    259,680.40/389,666.40 = 109,895.20/x
  3. Step 3: Cross multiply
    259,680.40x = 389,666.40 × 109,895.20
  4. Step 4: Simplify right side
    259,680.40x = 42,822,466,961.28
  5. Step 5: Solve for x
    x = 42,822,466,961.28/259,680.40
  6. Step 6: Final answer
    x = 164,904.50

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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.