Home / 279,944,006.40-419,916,009.60-75,492,748.80

Finding the Fourth Proportional to 279,944,006.40, 419,916,009.60 and 75,492,748.80

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Solution

The fourth proportional to 279,944,006.40, 419,916,009.60 and 75,492,748.80 is: 113,239,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,944,006.40 : 419,916,009.60 = 75,492,748.80 : x
  2. Step 2: Convert to fraction form
    279,944,006.40/419,916,009.60 = 75,492,748.80/x
  3. Step 3: Cross multiply
    279,944,006.40x = 419,916,009.60 × 75,492,748.80
  4. Step 4: Simplify right side
    279,944,006.40x = 31,700,613,829,831,188
  5. Step 5: Solve for x
    x = 31,700,613,829,831,188/279,944,006.40
  6. Step 6: Final answer
    x = 113,239,123.20

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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.