Home / 278,664,043.92-384,532,756.20-153,209,500.80

Finding the Fourth Proportional to 278,664,043.92, 384,532,756.20 and 153,209,500.80

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Solution

The fourth proportional to 278,664,043.92, 384,532,756.20 and 153,209,500.80 is: 211,416,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,664,043.92 : 384,532,756.20 = 153,209,500.80 : x
  2. Step 2: Convert to fraction form
    278,664,043.92/384,532,756.20 = 153,209,500.80/x
  3. Step 3: Cross multiply
    278,664,043.92x = 384,532,756.20 × 153,209,500.80
  4. Step 4: Simplify right side
    278,664,043.92x = 58,914,071,618,650,104
  5. Step 5: Solve for x
    x = 58,914,071,618,650,104/278,664,043.92
  6. Step 6: Final answer
    x = 211,416,122.40

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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.