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Finding the Fourth Proportional to 455,611.60, 683,611.80 and 218,832.40

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Solution

The fourth proportional to 455,611.60, 683,611.80 and 218,832.40 is: 328,341.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,611.60 : 683,611.80 = 218,832.40 : x
  2. Step 2: Convert to fraction form
    455,611.60/683,611.80 = 218,832.40/x
  3. Step 3: Cross multiply
    455,611.60x = 683,611.80 × 218,832.40
  4. Step 4: Simplify right side
    455,611.60x = 149,596,410,862.32
  5. Step 5: Solve for x
    x = 149,596,410,862.32/455,611.60
  6. Step 6: Final answer
    x = 328,341.97

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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.