Home / 279,937,983.40-419,906,975.10-239,123,314.60

Finding the Fourth Proportional to 279,937,983.40, 419,906,975.10 and 239,123,314.60

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Solution

The fourth proportional to 279,937,983.40, 419,906,975.10 and 239,123,314.60 is: 358,684,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,983.40 : 419,906,975.10 = 239,123,314.60 : x
  2. Step 2: Convert to fraction form
    279,937,983.40/419,906,975.10 = 239,123,314.60/x
  3. Step 3: Cross multiply
    279,937,983.40x = 419,906,975.10 × 239,123,314.60
  4. Step 4: Simplify right side
    279,937,983.40x = 100,409,547,709,571,664
  5. Step 5: Solve for x
    x = 100,409,547,709,571,664/279,937,983.40
  6. Step 6: Final answer
    x = 358,684,971.90

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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.