Home / 287,123.50-396,223.68-159,796.36

Finding the Fourth Proportional to 287,123.50, 396,223.68 and 159,796.36

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Solution

The fourth proportional to 287,123.50, 396,223.68 and 159,796.36 is: 220,515.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,123.50 : 396,223.68 = 159,796.36 : x
  2. Step 2: Convert to fraction form
    287,123.50/396,223.68 = 159,796.36/x
  3. Step 3: Cross multiply
    287,123.50x = 396,223.68 × 159,796.36
  4. Step 4: Simplify right side
    287,123.50x = 63,315,101,809.80
  5. Step 5: Solve for x
    x = 63,315,101,809.80/287,123.50
  6. Step 6: Final answer
    x = 220,515.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.