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Finding the Fourth Proportional to 455,962.40, 683,878.80 and 156,456.80

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Solution

The fourth proportional to 455,962.40, 683,878.80 and 156,456.80 is: 234,662.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,962.40 : 683,878.80 = 156,456.80 : x
  2. Step 2: Convert to fraction form
    455,962.40/683,878.80 = 156,456.80/x
  3. Step 3: Cross multiply
    455,962.40x = 683,878.80 × 156,456.80
  4. Step 4: Simplify right side
    455,962.40x = 106,997,488,635.84
  5. Step 5: Solve for x
    x = 106,997,488,635.84/455,962.40
  6. Step 6: Final answer
    x = 234,662.96

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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.