Home / 279,938,693.40-419,908,040.10-198,309,355.80

Finding the Fourth Proportional to 279,938,693.40, 419,908,040.10 and 198,309,355.80

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Solution

The fourth proportional to 279,938,693.40, 419,908,040.10 and 198,309,355.80 is: 297,464,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,693.40 : 419,908,040.10 = 198,309,355.80 : x
  2. Step 2: Convert to fraction form
    279,938,693.40/419,908,040.10 = 198,309,355.80/x
  3. Step 3: Cross multiply
    279,938,693.40x = 419,908,040.10 × 198,309,355.80
  4. Step 4: Simplify right side
    279,938,693.40x = 83,271,692,927,471,584
  5. Step 5: Solve for x
    x = 83,271,692,927,471,584/279,938,693.40
  6. Step 6: Final answer
    x = 297,464,033.70

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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.