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Finding the Fourth Proportional to 162,185.40, 221,870.78 and 161,502.30

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Solution

The fourth proportional to 162,185.40, 221,870.78 and 161,502.30 is: 220,936.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,185.40 : 221,870.78 = 161,502.30 : x
  2. Step 2: Convert to fraction form
    162,185.40/221,870.78 = 161,502.30/x
  3. Step 3: Cross multiply
    162,185.40x = 221,870.78 × 161,502.30
  4. Step 4: Simplify right side
    162,185.40x = 35,832,641,272.79
  5. Step 5: Solve for x
    x = 35,832,641,272.79/162,185.40
  6. Step 6: Final answer
    x = 220,936.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.