Home / 268,490.05-402,725.95-68,812.40

Finding the Fourth Proportional to 268,490.05, 402,725.95 and 68,812.40

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Solution

The fourth proportional to 268,490.05, 402,725.95 and 68,812.40 is: 103,216.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,490.05 : 402,725.95 = 68,812.40 : x
  2. Step 2: Convert to fraction form
    268,490.05/402,725.95 = 68,812.40/x
  3. Step 3: Cross multiply
    268,490.05x = 402,725.95 × 68,812.40
  4. Step 4: Simplify right side
    268,490.05x = 27,712,539,996.56
  5. Step 5: Solve for x
    x = 27,712,539,996.56/268,490.05
  6. Step 6: Final answer
    x = 103,216.27

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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.