Home / 272,403.45-408,517.20-99,270.51

Finding the Fourth Proportional to 272,403.45, 408,517.20 and 99,270.51

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Solution

The fourth proportional to 272,403.45, 408,517.20 and 99,270.51 is: 148,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,403.45 : 408,517.20 = 99,270.51 : x
  2. Step 2: Convert to fraction form
    272,403.45/408,517.20 = 99,270.51/x
  3. Step 3: Cross multiply
    272,403.45x = 408,517.20 × 99,270.51
  4. Step 4: Simplify right side
    272,403.45x = 40,553,710,787.77
  5. Step 5: Solve for x
    x = 40,553,710,787.77/272,403.45
  6. Step 6: Final answer
    x = 148,873.70

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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.