Home / 442,947.40-664,518.30-218,415.40

Finding the Fourth Proportional to 442,947.40, 664,518.30 and 218,415.40

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Solution

The fourth proportional to 442,947.40, 664,518.30 and 218,415.40 is: 327,671.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,947.40 : 664,518.30 = 218,415.40 : x
  2. Step 2: Convert to fraction form
    442,947.40/664,518.30 = 218,415.40/x
  3. Step 3: Cross multiply
    442,947.40x = 664,518.30 × 218,415.40
  4. Step 4: Simplify right side
    442,947.40x = 145,141,030,301.82
  5. Step 5: Solve for x
    x = 145,141,030,301.82/442,947.40
  6. Step 6: Final answer
    x = 327,671.03

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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.