Home / 278,664,039.90-384,532,750.68-153,209,496.78

Finding the Fourth Proportional to 278,664,039.90, 384,532,750.68 and 153,209,496.78

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Solution

The fourth proportional to 278,664,039.90, 384,532,750.68 and 153,209,496.78 is: 211,416,116.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,664,039.90 : 384,532,750.68 = 153,209,496.78 : x
  2. Step 2: Convert to fraction form
    278,664,039.90/384,532,750.68 = 153,209,496.78/x
  3. Step 3: Cross multiply
    278,664,039.90x = 384,532,750.68 × 153,209,496.78
  4. Step 4: Simplify right side
    278,664,039.90x = 58,914,069,227,112,008
  5. Step 5: Solve for x
    x = 58,914,069,227,112,008/278,664,039.90
  6. Step 6: Final answer
    x = 211,416,116.87

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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.