Home / 442,947.40-663,983.70-218,123.80

Finding the Fourth Proportional to 442,947.40, 663,983.70 and 218,123.80

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Solution

The fourth proportional to 442,947.40, 663,983.70 and 218,123.80 is: 326,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,947.40 : 663,983.70 = 218,123.80 : x
  2. Step 2: Convert to fraction form
    442,947.40/663,983.70 = 218,123.80/x
  3. Step 3: Cross multiply
    442,947.40x = 663,983.70 × 218,123.80
  4. Step 4: Simplify right side
    442,947.40x = 144,830,647,782.06
  5. Step 5: Solve for x
    x = 144,830,647,782.06/442,947.40
  6. Step 6: Final answer
    x = 326,970.31

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1.5x scale

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.