Home / 279,043,564.80-418,565,347.20-84,953,438.40

Finding the Fourth Proportional to 279,043,564.80, 418,565,347.20 and 84,953,438.40

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Solution

The fourth proportional to 279,043,564.80, 418,565,347.20 and 84,953,438.40 is: 127,430,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,043,564.80 : 418,565,347.20 = 84,953,438.40 : x
  2. Step 2: Convert to fraction form
    279,043,564.80/418,565,347.20 = 84,953,438.40/x
  3. Step 3: Cross multiply
    279,043,564.80x = 418,565,347.20 × 84,953,438.40
  4. Step 4: Simplify right side
    279,043,564.80x = 35,558,565,439,729,812
  5. Step 5: Solve for x
    x = 35,558,565,439,729,812/279,043,564.80
  6. Step 6: Final answer
    x = 127,430,157.60

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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.