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Finding the Fourth Proportional to 454,407.90, 681,611.85 and 155,226.30

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Solution

The fourth proportional to 454,407.90, 681,611.85 and 155,226.30 is: 232,839.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,407.90 : 681,611.85 = 155,226.30 : x
  2. Step 2: Convert to fraction form
    454,407.90/681,611.85 = 155,226.30/x
  3. Step 3: Cross multiply
    454,407.90x = 681,611.85 × 155,226.30
  4. Step 4: Simplify right side
    454,407.90x = 105,804,085,511.66
  5. Step 5: Solve for x
    x = 105,804,085,511.66/454,407.90
  6. Step 6: Final answer
    x = 232,839.45

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Double scale
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Similar ratio
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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.