Home / 278,981.70-384,990.18-151,660.50

Finding the Fourth Proportional to 278,981.70, 384,990.18 and 151,660.50

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Solution

The fourth proportional to 278,981.70, 384,990.18 and 151,660.50 is: 209,289.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,981.70 : 384,990.18 = 151,660.50 : x
  2. Step 2: Convert to fraction form
    278,981.70/384,990.18 = 151,660.50/x
  3. Step 3: Cross multiply
    278,981.70x = 384,990.18 × 151,660.50
  4. Step 4: Simplify right side
    278,981.70x = 58,387,803,193.89
  5. Step 5: Solve for x
    x = 58,387,803,193.89/278,981.70
  6. Step 6: Final answer
    x = 209,289.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.