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Finding the Fourth Proportional to 266,633.40, 400,209.30 and 161,657.40

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Solution

The fourth proportional to 266,633.40, 400,209.30 and 161,657.40 is: 242,643.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,633.40 : 400,209.30 = 161,657.40 : x
  2. Step 2: Convert to fraction form
    266,633.40/400,209.30 = 161,657.40/x
  3. Step 3: Cross multiply
    266,633.40x = 400,209.30 × 161,657.40
  4. Step 4: Simplify right side
    266,633.40x = 64,696,794,893.82
  5. Step 5: Solve for x
    x = 64,696,794,893.82/266,633.40
  6. Step 6: Final answer
    x = 242,643.25

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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.