Home / 278,068,912.80-417,103,369.20-155,624,906.40

Finding the Fourth Proportional to 278,068,912.80, 417,103,369.20 and 155,624,906.40

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Solution

The fourth proportional to 278,068,912.80, 417,103,369.20 and 155,624,906.40 is: 233,437,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,068,912.80 : 417,103,369.20 = 155,624,906.40 : x
  2. Step 2: Convert to fraction form
    278,068,912.80/417,103,369.20 = 155,624,906.40/x
  3. Step 3: Cross multiply
    278,068,912.80x = 417,103,369.20 × 155,624,906.40
  4. Step 4: Simplify right side
    278,068,912.80x = 64,911,672,790,874,640
  5. Step 5: Solve for x
    x = 64,911,672,790,874,640/278,068,912.80
  6. Step 6: Final answer
    x = 233,437,359.60

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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.