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Finding the Fourth Proportional to 302,715.70, 455,057.70 and 214,579.60

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Solution

The fourth proportional to 302,715.70, 455,057.70 and 214,579.60 is: 322,567.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,715.70 : 455,057.70 = 214,579.60 : x
  2. Step 2: Convert to fraction form
    302,715.70/455,057.70 = 214,579.60/x
  3. Step 3: Cross multiply
    302,715.70x = 455,057.70 × 214,579.60
  4. Step 4: Simplify right side
    302,715.70x = 97,646,099,242.92
  5. Step 5: Solve for x
    x = 97,646,099,242.92/302,715.70
  6. Step 6: Final answer
    x = 322,567.01

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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.