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Finding the Fourth Proportional to 302,605.40, 453,908.10 and 201,128.60

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Solution

The fourth proportional to 302,605.40, 453,908.10 and 201,128.60 is: 301,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,605.40 : 453,908.10 = 201,128.60 : x
  2. Step 2: Convert to fraction form
    302,605.40/453,908.10 = 201,128.60/x
  3. Step 3: Cross multiply
    302,605.40x = 453,908.10 × 201,128.60
  4. Step 4: Simplify right side
    302,605.40x = 91,293,900,681.66
  5. Step 5: Solve for x
    x = 91,293,900,681.66/302,605.40
  6. Step 6: Final answer
    x = 301,692.90

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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.